Cheat Codes: Enter the Steam control panel then select the 'My games' tab. Right Click the 'Left 4 Dead 2' option then select 'Properties'. Select 'Set Launch options' then enter -console and accept it. Start the game, and the console window should now appear at the main menu. Enter bind p toggleconsole as a console command. You must now enter one of the following map codes to load the corresponding map. Note: The same entries can be used with the map or changelevel codes during game play.
At the Steam control panel, Right Click the 'Left 4 Dead 2' option, and select 'Properties' under the 'My Games' tab. In the General tab, select 'Set Launch Options', enter '-console' and accept it. Start the game, and the console window should appear at the main menu. Enter 'bind p toggleconsole' as a console command.
Dead Center map c1m1_hotel map c1m2_streets map c1m3_mall map c1m4_atrium
Hard Rain map c4m1_milltown_a map c4m2_sugarmill_a map c4m3_sugarmill_b (Mill Escape level) map c4m4_milltown_b (Return To Town level) map c4m5_milltown_escape
The Parish map c5m1_waterfront_sndscape (Demo level; will glitch graphics until you quit the game) map c5m1_waterfront map c5m2_park map c5m3_cemetery map c5m4_quarter map c5m5_bridge
Then, press P during game play to display the console window. Enter sv_cheats 1 to enable cheat mode. The message 'Server cvar 'sv_cheats' changed to 1' will appear to confirm correct code entry. You can now enter one of the following codes to activate the corresponding cheat function. Note: Enabling cheat codes will prevent achievements from becoming unlocked.
Toggle God mode for entire team - god [0 or 1] Gain health - give health Defibrillator - give defibrilator Adrenaline - give adrenaline First aid kit - give first_aid_kit Pain Pills - give pain_pills Commit suicide - kill Quit game - quit Toggle no clipping mode - noclip Toggle Incendiary Ammo upgrade - upgrade_add incendiary_ammo Toggle Explosive Ammo upgrade - upgrade_add explosive_ammo Toggle Laser Sight upgrade - upgrade_add laser_sight Grenade launcher - give weapon_grenade_launcher Hunter claws - give melee Combat rifle - give rifle_desert AK-47 - give rifle_ak47 Sniper rifle - give sniper_military Magnum - give pistol_magnum Silenced SMG - give smg_silenced Chrome shotgun - give shotgun_chrome SPAS shotgun - give shotgun_spas Nightstick - give tonfa Boomer Bile - give vomitjar Guitar - give electric_guitar Frying pan - give frying_pan Machete - give machete Double pistol - give pistol Pump shotgun - give pumpshotgun Auto shotgun - give autoshotgun SMG - give smg M16 - give rifle Sniper rifle - give hunting_rifle Molotov cocktail - give molotov Pipe bomb - give pipe_bomb Propane tank - give propanetank Gas can - give gascan Oxygen tank - give oxygentank Refill ammunition - give ammo Toggle unlimited ammunition - sv_infinite_ammo [0 or 1] Spawn Spitter - z_spawn spitter Spawn Jockey - z_spawn jockey Spawn Charger - z_spawn charger Spawn common zombie - z_spawn zombie Spawn zombie mob - z_spawn mob Spawn Boomer - z_spawn boomer Spawn Hunter - z_spawn hunter Spawn Witch - z_spawn witch Spawn Smoker - z_spawn smoker Spawn Tank - z_spawn tank Level select - map [map name] Level select - changelevel [map name] Disable all cheat codes - sv_cheats 0
'Swamp Fever: Level 1': 'Eat Your Brains' song: In the bar in the abandoned town, find the jukebox and play it to hear 'Eat Your Brains' by Jonathan Coulton.
Heal faster: Use an adrenaline shot, then use your medikit to heal. This takes a lot less time, especially when you are dealing with a horde.
Easy 'Gong Show' achievement: Play level 4 of the Dark Carnival chapter. Find the strength-testing game in the first area. Inject adrenaline and hit it with a melee weapon.
Easy 'Guardin' Gnome' achievement: Play level 2 of the Dark Carnival chapter. Find the shooting range. Score over 500 points to make a garden gnome appear. Carry the gnome to the end of the level and board the chopper.
Easy 'Stache Whacker' achievement: Play level 4 of the Dark Carnival chapter. Find the Whack-A-Mole type arcade game. Attack it with a melee weapon and destroy it.
Steam achievements:
Complete the following tasks to unlock the corresponding achievement. To view your achievements and stats in Steam, select 'Community', then 'My profile', then 'View all my games', then the game and view stats. A ride denied: Kill a Jockey within 2 seconds of it jumping on a Survivor. A spittle help from my friends: As the Spitter, spit on a Survivor being choked by a Smoker. Acid reflex: Kill a Spitter before she is able to spit. Armory of one: Deploy an ammo upgrade and have your team use it. Back in the saddle: As the Jockey, ride the Survivors twice in a single life. Beat the rush: In a Survival match, get a medal only using melee weapons. Bridge burner: Survive the Parish campaign. Bridge over trebled slaughter: Cross the bridge finale in less than 3 minutes. Burning sensation: Ignite 50 Common Infected with incendiary ammo. Cache and carry: Collect 15 gas cans in a single Scavenge match. Chain of command: Kill 100 Common Infected with the chainsaw. Cl0wnd: Honk the noses of 10 Clowns. Club dead: Use every melee weapon to kill Common Infected. Confederacy of crunches: Finish a campaign using only melee weapons. Crass menagerie: Kill one of each Uncommon Infected. Dead in the water: Kill 10 swampy Mudmen while they are in the water. Dismemberment plan: Kill 15 Infected with a single grenade launcher blast. Fried piper: Use a Molotov to burn a Clown leading at least 10 Common Infected. Fuel crisis: Make a Survivor drop a gas can during overtime. Gas guzzler: Collect 100 gas cans in Scavenge. Gas shortage: Cause 25 gas can drops as a Special Infected. Gong show: Prove you are stronger than Moustachio. Guardin' gnome: Rescue Gnome Chompski from the Carnival. Head honcho: Decapitate 200 Infected with a melee weapon. Heartwarmer: In a Versus match, leave the saferoom to defibrillate a dead teammate. Hunting party: Win a game of Scavenge. Level a charge: Kill a Charger with a melee weapon while they are charging someone. Long distance carrier: As the Charger, grab a Survivor and carry them over 80 feet. Meat tenderizer: As the Charger, grab a Survivor and smash them into the ground for a solid 15 seconds. Midnight rider: Survive the Dark Carnival campaign. Price chopper: Survive the Dead Center campaign. Qualified ride: As the Jockey, ride a Survivor for more than 8 seconds. Ragin' Cajun: Survive the Swamp Fever campaign. Robbed zombie: Collect 10 vials of Boomer vomit from infected CEDA agents you have killed. Rode hard, put away wet: As the Jockey, ride a Survivor and steer them into a Spitter's acid patch. Scattering ram: As the Charger, bowl through the entire enemy team in a single charge. Scavenger hunt: Stop the enemy team from collecting any gas cans during a Scavenge match. Septic tank: Use a bile grenade on a Tank. Shock jock: Revive 10 dead Survivors with the defibrillator. Sob story: Navigate the sugar mill and reach the safe room without killing any Witches. Spit happens: As the Spitter, hit every Survivor with a single acid patch. Stache whacker: Prove you are faster than Moustachio. Still something to prove: Survive all campaigns on Expert. Strength in numbers: Form a team and beat an enemy team in 4v4 Versus or Scavenge. Tank burger: Kill a Tank with melee weapons. The quick and the dead: Revive 10 incapacitated Survivors while under the speed boosting effects of adrenaline. The real deal: Survive a campaign on Expert difficulty with Realism mode enabled. Violence in silence: Navigate the impound lot and reach the cemetery safe room without tripping any alarms. Weatherman: Survive the Hard Rain campaign. Wing and a prayer: Defend yourself at the crashed airliner without taking damage.
'Blood Harvest: The Tunnel': Easy win as Infected
In Versus mode, there is a warehouse-type area immediately after the starting safe room. As a zombie, quickly run back to the emergency door on the other side of the warehouse. There should be a forklift near the door. Spawn and push this forklift in front of the doorway. Note: You may need to break the white door in front of the emergency door to get the forklift all the way in front of the doorway.
'Dead Air: The Construction Site': Shortcut
In 'The Construction Site', there is a metal door and a raised fence by the barricade that you burn. Jump on the fence and follow it until it begins to go downward. At this point, jump on the metal siding 'door'. Note: Some practice may be required.
'Dead Air: The Crane': Shortcut
In 'The Crane', jump on the fence after climbing on the vent cover. Go across the fence then jump to the other side of the horizontal fence. Turn left and go to the end. Jump up and to the right to air conditioning unit box on the corner of the next building. Once on the next building, go to the left corner. Jump to the top branch of the tree below you. You will lose a lot of health after landing. However you will be at the next safe room.
'Death Toll: Boathouse': Items
Under any difficulty setting, a health pack and pills will spawn in the bathroom across the field from the house.
'No Mercy: The Apartments': Easy kills
In level 1 of the No Mercy chapter, the Survivors must jump into a sewer hole to enter them. As an Infected, use this to your advantage. One must be a Smoker or a Hunter. Do not spawn; instead hide behind one of the large canisters in the room. Once the players open the hole and are done checking the vicinity, they will jump in. Due to the fact they must jump in one at a time or get stuck, make sure you have a clear view of the last one in line. Once all three are down and the fourth Survivor is still up, pounce or grab him. By doing this he will not be able to be saved, unless someone throws a Molotov or a pipe bomb.
'No Mercy: The Apartments': Shortcut
As soon as the level starts, look over the edge of the building and down to the street. Notice the box-like object that is partway down. Drop down to it. Although you will take some damage, you will still be alive. You can then drop down to ground level and continue the level.
'No Mercy: The Hospital': Easy win as Infected
Before you spawn, go all the way up to floor 28, where the elevator lets out. Just outside of the elevator is a generator. Move it in front of the elevator door. , if the Survivors know what you are doing, they can move it. It will require three survivors to move an object. However if you have someone else on the Infected side, they can go a little bit further and move the forklift that is there in front of the doorway.
'No Mercy: The Sewer': Easy way through
Over by the trucks is a door that you can open later. However if you have some people meleeing it, it will eventually break.
'No Mercy: The Sewer': Easy win as Infected
This trick works best as a Hunter. Before you spawn in No Mercy level 3, go all the way to the very end, at the hospital. Once up the ladder, turn to your right and there should be a dumpster. Move it all the way over to the manhole and one of two things will happen. It will either fall all the way down, which is bad because the Survivors can move it; or it will partially fall in. The survivors cannot move this at all. If you are a Tank, you can move a car over it, which is better than any dumpster. From here, do not puke on them as a Boomer. It will attract the Horde. The Horde will try to move the object away from the manhole. Then, as Hunters and Smokers, you can just attack them. They may shoot you, but every so often, you can hurt them until finally they die. In the warehouse near the end of the level, immediately after the area with the gas station and the lift, there is a forklift which you can use to block the door the survivors must go through. When the level starts, do not spawn. Instead, quickly go to the warehouse. When you get there, spawn and start pushing the forklift to the door. To push the forklift, keep attacking it. It will move very slowly but you will have time to push it before the Survivors reach it. The only way the Survivors can move it is by throwing pipe bombs at it repeatedly.
Achievements
Complete the following task to unlock the corresponding achievement.
Achievement
How to unlock
101 Cremations
Set 101 Infected on fire.
Akimbo Assassin
Survive a campaign firing no guns other than pistols.
All 4 Dead
Kill all four Survivors on one life as a Tank.
Back 2 Help
Leave a safe room to save an incapped teammate and bring them back
Barf Bagged
Cover four Survivors with Boomer bile at once.
Big Drag
Drag a Survivor x distance with your tongue.
Blind Luck
You or another Survivor take no damage after being vomited on by a Boomer.
Brain Salad
Make 100 headshot kills.
Burn the Witch
Light a Witch with a Molotov.
Chain Smoker
Constrict two Survivors on one life as a Smoker.
Clean Kill
Shove a Boomer and then kill him without him splashing on anyone.
Cr0wnd
Kill a Witch with a single headshot.
Dead Baron
Survive the Dead Air campaign.
Dead Giveaway
Heal a fellow Survivor when your own health is below 10.
Dead Stop
Punch a Hunter as he is pouncing.
Dead Wreckening
Dole out 5000 total Survivor damage as a Special Infected.
Do Not Disturb
Sneak past all Witches in a campaign without disturbing one.
Double Jump
Pounce two different Survivors on one life as a Hunter.
Drag and Drop
Rescue a Survivor from a Smoker's tongue before he takes damage.
Field Medic
Heal 25 Survivors with a first aid kit.
Grim Reaper
Survive the Blood Harvest campaign.
Ground Cover
Save another Survivor from a Special Infected while on the ground.
Helping Hand
Revive 50 incapacitated Survivors.
Hero Closet
Rescue a Survivor trapped in a closet.
Hunter Punter
Shove a Hunter off of a pinned and helpless Survivor.
Jump Shot
Headshot a Hunter while he's leaping.
Lamb 2 Slaughter
Incapacitate a Survivor after he has entered and exited a safe room.
Man vs Tank
Single-handedly kill a Tank.
Mercy Killer
Survive the No Mercy campaign.
My Bodyguard
Protect any Survivor from an attacking Infected 50 times.
No Smoking Section
Kill 10 Smokers as they are pulling helpless Survivors.
No-One Left Behind
Beat a campaign with all 4 Survivors.
Nothing Special
Survive a campaign with no Survivors taking damage from Specials.
Pharm-assist
Give pain pills to 10 Survivors.
Pyrotechnician
Blow up 20 Infected in a single explosion.
Red Mist
Kill 1000 Infected with a mounted machine gun.
Safety First
Play through a campaign with no Survivors taking friendly fire damage.
Spinal Tap
Kill an Infected with a single blow from behind.
Stand Tall
Survive a campaign without being incapacitated.
Stomach Upset
All Survivors complete a campaign without being vomited on.
Tankbusters
Kill a Tank without it dealing any damage to a Survivor.
Toll Collector
Survive the Death Toll campaign.
Tongue Twister
Kill a Smoker who has grabbed you with his tongue.
Towering Inferno
Light a Tank with a Molotov.
Unbreakable
Beat a campaign without ever using a first aid kit on yourself.
Untouchables
No Survivors take damage after contacting the rescue vehicle.
What Are You Trying To Prove?
Survive all campaigns on Impossible.
Witch Hunter
Kill a Witch without any Survivor taking damage from her.
Zombicidal Maniac
Survive any campaign on Impossible.
Zombie Genocidest
Kill 53,595 Infected.
Dead Rising reference
The amount of zombies you have to kill for the 'Zombie Genocidist' achievement (53,595), is the same zombie kill count and achievement in Dead Rising.
Death Toll: See Newburg burning
You can see the city of Newburg from the 'Dead Air' episode burning at the end of 'Death Toll'.
Defeating Survivors
When Hunters are on fire, their pounces and attacks on Survivors do significantly more damage per hit. Use this to your advantage and deliberately set yourself on fire with the many fire pits or burning cars, then attack. This allows you to easily down Survivors. Note: This only works for Hunters, not Smokers, Boomers, or Tanks.
Defeating Tanks
To kill a Tank faster, throw a Molotov cocktail or a gas tank and shoot it. When the Tank is on fire, shoot him with an assault rifle.
Defeating Witches
To kill a Witch faster, throw a Molotov cocktail. When the Witch is on fire, shoot her with an automatic shotgun.
Developers Console Cheats
At the main menu, select 'Options,' then 'Keyboard/Mouse.' Enable 'Allow Developers Console.' During gameplay, press '~' to access the console. Type in 'Sv_Cheats 1' and press 'Enter' to enable the cheats. Then, enter any one of the following:
Code
Effect
map [map name]
Start LAN server; enable while in 'Campaign Lobby' screen
changelevel [map name]
Quick change map
tongue_range [#] (Default 750)
Sets the maximum range of the smoker's tongue attack
z_witch_burn_time
Amount of time before a burning Witch dies from fire (does not affect damage caused by fire)
z_health
Change Zombie Health
z_speed
Change Zombie Speed
director_no_human_zombies 0/1
Disables/enables controllable Boss Infected on any map
director_panic_forever 0/1
Enables/Disables never ending panics.
director_force_panic
Forces a panic event
give ammo
Full Ammunition
give pistol
Get Pistol
give autoshotgun
Gives auto shotgun
give health
Gives full health
give gascan
Gives gascan
give hunting_rifle
Gives hunting rifle
give molotov
Gives molotov
give oxygentank
Gives oxygen tank
give pain_pills
Gives pain pills
give pipe_bomb
Gives pipebomb
give propanetank
Gives propanetank
give rifle
Gives you an Mk 47 (machine gun)
give first_aid_kit
Gives you first aid kit
z_spawn weapon_SMG
Gives you the SMG.
god
Invincibility
director_no_mobs [1/0]
No mob rushes
firstperson
Play in first person (default); this cheat is only necessary if thirdperson mode is enabled
z_witch_damage [#]
Sets the amount of damage a Witch's attack does.
thirdperson_mayamode
Sets the camera to be fixed in place while in either third person or third person shoulder mode. Enter once to turn on and enter again to turn off.
thirdperson
Sets the camera to be in third person mode.
thirdpersonshoulder
Sets the camera to over-the-shoulder third person mode
z_common_limit
Sets the maximum amount of regular zombies
z_tank_health [#]
Sets the maximum health of the Tank
z_frustration_lifetime [#]
Sets the number of seconds until the player loses control of the Tank from not attacking survivors
sb_friendlyfire [1/0]
Sets whether or not bots (and only bots) are allowed to do friendly fire damage
director_stop
Shuts off all wanderers, mobs, specials, and bosses
z_spawn zombie
Spawns 1 Zombie
boom
Spawns a active pipebomb under you.
fire
Spawns a lighted molotov right on the floor under you.
z_spawn [bossname]
Spawns a special infected (infected names:hunter,boomer,smoker,witch,tank)
z_spawn mob
Spawns a zombie horde
z_spawn boomer
Spawns boomer at location of crosshair
z_spawn hunter
Spawns hunter at location of crosshair
z_spawn smoker
Spawns smoker at location of crosshair
z_spawn tank
Spawns tank at location of crosshair
noclip
Toggles No Clipping Mode
z_witch_allow_change_victim [1/0]
True/False setting that allows the witch to change targets instead or focus on the one survivor that alerted her first
sv_infinite_ammo 1
Unlimited Ammunition
retry
You can unlock achievements while using cheats (after entering sv_cheats 1, enter retry so that it will restart the game with the cheats on)
Easy 'Akimbo Assassin' achievement
Start a mission and shoot a few zombies using only your pistol. Then, select the 'Take a Break' option and allow the NPCs to complete the level.
Easy 'Cr0wnd' achievement
Play under the Easy difficulty setting. Get an auto-shotgun and find a Witch. Quickly approach the Witch with lights off and force her to rise. Quickly shoot her head as she stands.
Easy 'Dead Stop' achievement
Use a shotgun and run at a Hunter, hitting [Melee] repeatedly.
Easy 'Helping Hand' achievement
Go to a safe house, preferably with a combat shotgun. Incapacitate the other three members of your group, then revive them. Doing this counts toward your achievement. It is easier with a combat shotgun because it deals a lot of damage fast. In a single player campaign, make sure all other survivors are in the lower red health area. When you incapacitate one of them, the others will try to revive them. You then need to shoot the others before they revive the incapacitated players or you will not get the points for reviving.
Easy 'Man vs. Tank' achievement
Start a new game in 'Dead Air' under the Easy difficulty and select the finale. Once you have made it to the tanker, restock on ammo, grab a pipe bomb or Molotov cocktail, then answer the radio and start the gas pump. Once the pump is activated, run around to the right-hand side of the rescue plane and prepare to fight off the horde. A benefit of this position is that the horde cannot come at you from behind. When it is time for the Tank to appear, it will usually spawn on the far side of the plane. Run up to opposite side then run back and forth without coming around the plane to your side. Your AI teammates will not shoot the Tank when it is on the other side of the plane. By crouching you will be able to easily aim at the lower body from beneath the plane and take it down quickly. The open area at the end of 'Death Toll' is a good location to unlock this achievement. There is enough room here to fend off the horde yourself and deal with the tank.
Easy 'Stand Tall' and 'Unbreakable' achievements
Select the Easy difficulty while playing offline. Let the bots clean up the enemies on the map. If you get healed, you can restart the map after dying and not have it count against you.
Easy 'Unbreakable' achievement
If you have a health pack and are low on health, pause game play and select 'Take A Break'. While you are idle you will be healed. When it is done, rejoin the game and the healing will not count against you. Note: This was done under the Easy difficulty setting.
Easy 'Untouchables' achievement
In No Mercy, Level 5, when you climb to the rooftop, there is a small building with a satellite dish by where the helicopter lands. Climb on top of this building. There is a small staircase on one of the sides leading up to a sealed door (only zombies can open it). Stand above it on the edge, and knock the zombies down as they come up. Eventually one will knock the door down. The Survivors can stand against the back wall in the room, and no infected will come in, including the Tank. Once the helicopter lands, throw a pipe bomb, and quickly run to the helicopter.
Easy 'Zombie Genocidest' achievement
This can be done anywhere, except in Versus mode. You must kill 53,595 zombies. When playing in Campaign mode, you get a few friends (Louis, Bill, Zoey, and Francis) to help you. The bots can sometimes kill the zombies and special Infected more than you can. In order to kill more zombies than the bots, find a sniper rifle. Get to a high area and snipe each zombie. You can also go lower, but turn off the flashlight or your snipe can be ruined by the attack of a zombie. The best levels to do this are any until the finale in 'Blood Harvest'; 'The Greenhouse' and 'Crane' levels in 'Dead Air'; 'The Church' and 'The Town' in 'Death Toll'; and the first three levels in 'No Mercy'.
Easy kills as Infected in No Mercy: The Sewer
The Survivors must jump into a sewer hole at a certain point. As an Infected, use this to your advantage. While playing as a Smoker or Hunter, hide behind one of the large canisters in the room. Once one of the Survivors open the hole and are done checking the vicinity, they will jump in. Due to the fact they must jump in one at a time or get stuck, make sure you have a clear view of the last one in line. Once all three are down and the fourth Survivor is still up, pounce or grab him or her. By doing this, he or she will not be able to be saved, unless someone throws a Molotov cocktail or pipe bomb.
Easy wins as Infected in Blood Harvest: The Tunnel
There is a warehouse-type area immediately after the starting safe room. Quickly run back to the emergency door on the other side of the warehouse. There should be a forklift near the door. Spawn and push this forklift in front of the doorway. Note: You may need to break the white door in front of the emergency door to get the forklift all the way in front of the doorway.
Easy wins as Infected in No Mercy: The Hospital
Before you spawn, go all the way up to floor 28, where the elevator lets out. Just outside of the elevator is a generator. Move it in front of the elevator door. If the Survivors know what you are doing, they can move it. It requires three survivors to move an object. However, if you have someone else on the Infected side, they can go a little bit further and move the forklift in front of the doorway.
Easy wins as Infected in No Mercy: The Sewer
In the warehouse near the end of the level, immediately after the area with the gas station and the lift, there is a forklift which you can use to block the door the Survivors must go through. When the level starts, do not spawn. Instead, quickly go to the warehouse. When you get there, spawn and start pushing the forklift to the door. To push the forklift, keep attacking it. It will move very slowly, but you will have time to push it before the Survivors reach it. The only way the Survivors can move it is by throwing pipe bombs at it repeatedly. This trick works best as a Hunter. Before you spawn in the No Mercy campaign, Level 3, go all the way to the very end, at the hospital. Once up the ladder, turn to your right, and there should be a dumpster. Move it all the way over to the manhole, and one of two things will happen. It will either fall all the way down, which is bad because the Survivors cannot move it; or it will partially fall in. The survivors cannot move this at all. If you are a Tank, you can move a car over it, which is better than the dumpster. From here, do not puke on them as a Boomer, as it will attract the Horde. The Horde will try to move the object away from the manhole. Then, attack them as Hunters and Smokers. They may shoot you, but every so often, you can hurt them until finally they die.
Faster melee attacks
Rapidly tap [Melee] and [Weapon Switch] alternately to double your melee speed.
Floating Tanks
Tanks will float when dead.
Half-Life reference
In some of the newspapers seen throughout the game, Dr. Breen from Half Life can be seen.
Hunter runs while crouched
As a Hunter in 'Ghost mode' (blue screen), walk into an object that you can move through (for example, a crate or door). Press [Crouch] for a moment. If done correctly, your view will be crouched and you will run twice as fast while still in Ghost mode. After you spawn, your Hunter will be completely silent and cannot be detected by Survivors, as well as be able to run around. In this state you can pounce immediately without having to wait for your meter to build. However, you can only pounce once, otherwise the glitch will end. You can die and try it again in Ghost mode. The same thing happens when crouching again and jumping. You can still melee, climb, and walk off edges.
Hunter wall jumping
Use the following trick to jump off the walls of buildings as a Hunter in Versus mode. Crouch to charge your jump. Click the Mouse to jump. As soon as you hit the wall, quickly turn your character around so that you are at least facing 180 degrees away from your original point of view before the Hunter begins to drop. Quickly Click the Mouse again while still holding [Crouch]. You will be propelled off the wall and further into the air. This trick is useful for reaching higher places. It may require some practice.
Invincibility while reloading
Press [Reload], then hold [Melee] to knock back attacking zombies while reloading your gun.
Keep CPU characters from healing you
When offline, there is a way to keep CPU characters from healing you. When a CPU character is trying to heal you with first aid, take out either your own first aid or pain pills. The CPU character will immediately stop healing you. Note: As soon as you put your healing item away, they will try again. This is useful when trying to get the 'Unbreakable' achievement.
Kill two zombies with one bullet
Use a sniper rifle and zoom in on a group of zombies. When you see a zombie standing behind another one, shoot at the one in the front. The zombie in back will also get shot.
Left 4 Dead self-references
In the hospital levels of 'No Mercy', you can find a lot of X-rays with only four fingers. This is a reference to the game's cover art. If you are an Infected when the elevator in 'No Mercy' is activated and moving down, the number of what floor it is on will not change from '04', which is a reference to the '4' in the game's title. In the hospital starting safe room of 'No Mercy', there is graffiti on the wall reading 'I killed...' and then lists different variables, including 53,594. This is the number of Infected you must kill to receive the 'Zombie Genocide' achievement.
Map names
Use one of the following entries with the changelevel or map codes.
Level
Code
Campaign mode
Blood Harvest
The Woods changelevel l4d_farm01_hilltop
Blood Harvest
The Tunnel changelevel l4d_farm02_traintunnel
Blood Harvest
The Bridge changelevel l4d_farm03_bridge
Blood Harvest
The Train Station changelevel l4d_farm04_barn
Blood Harvest
Farmhouse Finale changelevel l4d_farm05_cornfield
Dead Air
The Greenhouse changelevel l4d_airport01_greenhouse
Dead Air
The Crane changelevel l4d_airport02_offices
Dead Air
The Construction Site changelevel l4d_airport03_garage
Dead Air
The Terminal changelevel l4d_airport04_terminal
Dead Air
Runway Finale changelevel l4d_airport05_runway
Death Toll
The Turnpike changelevel l4d_smalltown01_caves
Death Toll
The Drains changelevel l4d_smalltown02_drainage
Death Toll
The Church changelevel l4d_smalltown03_ranchhouse
Death Toll
The Town changelevel l4d_smalltown04_mainstreet
Death Toll
Boathouse Finale changelevel l4d_smalltown05_houseboat
No Mercy
The Apartments changelevel l4d_hospital01_apartment
No Mercy
The Subway changelevel l4d_hospital02_subway
No Mercy
The Sewer changelevel l4d_hospital03_sewers
No Mercy
The Hospital changelevel l4d_hospital04_interior
No Mercy
Rooftop Finale changelevel l4d_hospital05_rooftop
Versus mode
Blood Harvest
The Woods changelevel l4d_vs_farm01_hilltop
Blood Harvest
The Tunnel changelevel l4d_vs_farm02_traintunnel
Blood Harvest
The Bridge changelevel l4d_vs_farm03_bridge
Blood Harvest
The Train Station changelevel l4d_vs_farm04_barn
Blood Harvest
Farmhouse Finale changelevel l4d_vs_farm05_cornfield
No Mercy
The Apartments changelevel l4d_vs_hospital01_apartment
No Mercy
The Subway changelevel l4d_vs_hospital02_subway
No Mercy
The Sewer changelevel l4d_vs_hospital03_sewers
No Mercy
The Hospital changelevel l4d_vs_hospital04_interior
No Mercy
Rooftop Finale changelevel l4d_vs_hospital05_rooftop
Minigun launcher
Stand behind any mounted minigun on any level, and melee it. You can do this by yourself or get other people to help. Every time your gun hits the minigun, its launching strength will increase. Once you hit it enough, jump on top of it. This will either make you bounce very high or launch you across the map to your death. Bouncing straight up on it allows you to get to unreachable places such as buildings, airplanes, barriers. etc.
Orange Box reference
Near one of the escalators in the subway, there is an ad for 'Orange Box' Juice, which is a reference to Valve's Orange Box game compilation.
Play as infected
Enable the 'ent_fire !self setteam 3' code. After spawning and dying, press [Jump] until the camera changes into Free Roam mode. Then, enable one of the following 'z_spawn' codes to play as that type of infected: z_spawn smoker z_spawn tank z_spawn boomer z_spawn hunter
Reload shotguns during melee attacks
This trick works with either shotgun because reloading causes the bullets to stack, and they are not reloaded with one single clip. To perform this trick, press [Melee] as soon as you choose to reload. You character will initiate the melee action, which will knock the Infected back, and therefore cancel the reload animation. Despite this happening, your gun will continue to reload. This makes it much easier to keep yourself safe while reloading the shotgun.
Safe area
When hordes of Infected appear, try to find a room with a door and no windows. Go inside, and close the door. The Infected may break the door, but when you see a hole in it, shoot the Infected trying to break it down. Your teammates can handle most of the Infected.
Shortcut in Dead Air: The Construction Site
There is a metal door and a raised fence by the barricade that you burn. Jump on the fence, and follow it until it begins to go downward. At this point, jump on the metal siding door. Note: Some practice may be required.
Shortcut in Dead Air: The Crane
Jump on the fence after climbing on the vent cover. Go across the fence, then jump to the other side of the horizontal fence. Turn left, and go to the end. Jump up and to the right to the air conditioning unit box on the corner of the next building. Once on the next building, go to the left corner. Jump to the top branch of the tree below you. You will lose a lot of health after landing; however, you will be at the next safe room.
Shortcut in No Mercy: The Apartments
As soon as the level starts, look over the edge of the building and down to the street. Notice the box-like object that is partway down. Drop down to it. Although you will take some damage, you will still be alive. You can then drop down to the ground and continue the level.
Split-screen mode
Insert an Xbox 360 controller. Use a text editor to edit the '360controller.cfg' file in the 'left4deadcfg folder' directory. Replace its content with the following: unbindall // Prevent mouse/keyboard control when gamepad is in use (to prevent autoaim exploit) joystick 1 joy_advanced '1' // use advanced joystick options (allows for multiple axes) joy_name 'L4D Xbox360 Joystick Configuration' joy_advaxisx 3 // x-axis controls GAME_AXIS_SIDE (strafing left and right) joy_advaxisy 1 // y-axis controls GAME_AXIS_FORWARD (move forward and back) joy_advaxisz 0 // z-axis is treated like a button joy_advaxisr 2 // r-axis controls GAME_AXIS_PITCH (look up and down) joy_advaxisu 4 // u-axis controls GAME_AXIS_YAW (look left and right) joy_advaxisv 0 // v-axis is unused joy_forwardsensitivity -1.0 // movement sensitivity joy_sidesensitivity 1.0 joy_forwardthreshold 0.1 // movement dead zone settings joy_sidethreshold 0.1 joy_pitchsensitivity 1.0 // look sensitivity joy_yawsensitivity -1.5 joy_pitchthreshold 0.1 // look dead zone settings joy_yawthreshold 0.0 joy_variable_frametime 1 joy_autoaimdampenrange 0.85 joy_autoaimdampen 0.5 joy_lowend 0.65 joy_lowmap 0.15 joy_accelscale 3.0 joy_accelmax 4.0 joy_response_move 5 joy_response_look 1 joy_autoaimdampen 0.3 joy_autoaimdampenrange 0.85 joyadvancedupdate // advanced joystick update allows for analog control of move and look // Alternate control 1 bind '0' 'slot10' bind '1' 'slot1' bind '2' 'slot2' bind '3' 'slot3' bind '4' 'slot4' bind '5' 'slot5' bind '6' 'slot6'
bind 'SPACE' '+jump' bind 'TAB' '+showscores' bind 'ESCAPE' 'cancelselect' bind 'SHIFT' '+speed' bind 'CTRL' '+duck' bind 'F1' 'Vote Yes' bind 'F2' 'Vote No' bind 'F5' 'jpeg' bind 'MOUSE1' '+attack' bind 'MOUSE2' '+attack2' bind 'MOUSE3' '+zoom' bind 'MWHEELUP' 'invprev' bind 'MWHEELDOWN' 'invnext' // controller2 bindings cmd2 +jlook // enable joystick look cmd2 bind 'A_BUTTON' '+jump;+menuAccept' // (A) button - Jump -menuAccpt allows us to make selections on hud menus cmd2 bind 'B_BUTTON' '+reload' // (B) button - Reload cmd2 bind 'X_BUTTON' '+use' // (X) Use cmd2 bind 'Y_BUTTON' 'lastinv' // (Y) button - swap pistol/rifle or z_abort -used to respawn as a ghost. cmd2 bind 'R_TRIGGER' '+attack' // RT - Main weapon - Primary trigger cmd2 bind 'L_TRIGGER' '+attack2' // LT - Melee cmd2 bind 'R_SHOULDER' '+lookspin' // RB - Fast 180 spin cmd2 bind 'L_SHOULDER' 'toggle_duck' // LB - Duck - is also used to give objects to people. cmd2 bind 'STICK1' 'vocalize smartlook' // LS - vocalize cmd2 bind 'STICK2' '+zoom' // RS click - Rifle Zoom // Fixed bindings, do not change these across joystick presets cmd2 bind 'BACK' 'togglescores' // (back) button - scores cmd2 bind 'START' 'pause' // (start) button - pause cmd2 bind 'S1_UP' '+menuUp' // Hud menu Up cmd2 bind 'S1_DOWN' '+menuDown' // Hud menu Down cmd2 bind 'UP' 'impulse 100' // DPad Up - Toggle flashlight cmd2 bind 'LEFT' 'slot3' // DPad Left - grenade cmd2 bind 'RIGHT' 'slot4' // DPad Right - health cmd2 bind 'DOWN' 'slot5' // DPad Down - Pills At the main menu, select 'Options', then choose the 'Keyboard/Mouse' selection. Enable the 'Allow Developers Console' option. While playing the game, press ~ to display the console window. Type 'Exec 360controller.cfg' and press [Enter], then set your split screen mode with the following console codes: 'ss_splitmode 1' ('Horizontal-Cut' for standard monitors) or 'ss_splitmode 2' ('Vertical-Cut' for widescreen monitors). Connect to a server. Join the server with the 'connect [IP address] 2' console code. You must now set the Xbox 360 controller to player two (with the light on the Xbox logo pointing to '2'). To do this, quickly unplug and reinsert the Xbox 360 controller while the game is running. You can now play in Co-op mode in split-screen.
Star Wars reference
The APC in 'Blood Harvest' is marked 'TK-421' is a reference to the stormtrooper in Star Wars that Luke Skywalker and Han solo incapacitated.
Stay alive longer
When hordes of Infected appear, find a room with a door and no windows. Go inside and close the door. The Infected may break the door, but when you see a hole in it, shoot the Infected trying to break it down. Your teammates can handle most of the Infected.
Stronger Hunter
When Hunters are on fire, their pounces and attacks on Survivors do more damage per hit. Use this to your advantage, and deliberately set yourself on fire with fire pits or burning cars, then attack. This allows you to easily down Survivors. Note: This only works for Hunters, not Smokers, Boomers, or Tanks.
Team Fortress 2 references
Before the finale in 'Dead Air', while still in the safe room you can sometimes see a box which advertising Team Fortress 2. John Slater, who is the voice actor for the person who drives the boat in 'Death Toll', also voices the sniper in Team Fortress 2.
Unbreakable door
If you are low on health and need somewhere to hide, find a bathroom stall. Go inside the stall and close the door. The door never breaks down. This works well if you are trying to heal yourself.
Zoey has three hands
On the movie poster for 'No Mercy', look closely to see that Zoey has three hands holding her gun.
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