| "dark Carnival: The Motel" Rock Glitch |
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Once you slide down from the hill, go to your right and there should be a big rock. Repeatedly press the crouch button while keeping walking forward and you should be in the rock.
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| "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. |
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| Car Alarm Glitch |
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Car alarms will not go off if shot with incendiary ammunition.
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| Chainsaw Aerial Blood Glitch |
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If you use a chainsaw and sawing up a few infected and immediately point the chainsaw up to the sky without stopping, blood will still come out from nowhere, even the blood will drop to the floor. This glitch will stop if you release the button or the chainsaw is out of gas.
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| Charger Glitch |
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If a charger rams a survivor into a temporary unmovable object (a survivor healing), the charger will stall for a second, run backwards, still holding the survivor, to a distance away, then pummel the survivor normally.
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| Charger Incapactation Animation Glitch |
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When you are incapacitated by a charger charge past you (with one or two health left), the incapacitation animation will play out strangely: thrown away normally but 'bump' up and down, then gets up normally, but after the animation finishes, you will be instantly downed.
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| Civilian Glitch |
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In order to do this glitch, you must open developer console and type in 'ent_remove' and be in third person or third person shoulder mode, aim EXTREME CAREFULLY for the weapons your character is carrying. You must remove all useable weapons includes throwable weapons. If successful, your character will be in his/her 'base building' (spans their arms wide open, no animation for being attacked and 'float walking') status, result in a hilarious effect. Please note that if you aimed wrongly at your character, the game will crash. And that if you pick up a weapon, the glitch will stop.
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| Developer Console Cheats |
At the main menu, select "Options", then "Keyboard/Mouse". Enable "Allow Developers Console". During gameplay, press "~" to access the console, then input the cheat.
| Effect | Code
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(Default 750) Sets the maximum range of the smoker's tongue attack"tongue_range [#]
| Amount of damage you want to do to survivors | z_pounce_damage X
| | Amount of time before a burning Witch dies from fire (does not effect caused by fire) | z_witch_burn_time
| | Change zombie health | z_health
| | Change Zombie speed | z_speed
| | Commits suicide | kill
| | Commits suicide | explode
| | Disables/enables controllable Boss Infected on any map | director_no_human_zombies 0/1
| | Enables/Disables never ending panics | director_panic_forever 0/1
| | Forces a panic event | director_force_panic
| | Full Ammunition | give ammo
| | Get pistol | give pistol
| | Give Ammo to your primary weapon | impulse 101
| | Give auto shotgun | give autoshotgun
| | Give first aid kit | give first_aid_kit
| | Give full health | give health
| | Give gascan | give gascan
| | Give hunting rifle | give hunting_rifle
| | Give molotov | give molotov
| | Give oxygentank | give oxygentank
| | Give pain pills | give_pain_pills
| | Give pipe bomb | give pipe_bomb
| | Give propanetank | give propanetank
| | Give you an MK 47 (machine gun) | give rifle
| | Give you the SMG | z_spawn weapon_SMG
| | Gives bile bomb | give vomitjar
| | Gives chainsaw | give chainsaw
| | Invincibility | god
| | Just like god but you receive damage (sometimes if you are the only survivor left, you can't receive damage from infected | buddha 1
| | Makes your bot teammates shoot nonstop | sb_openfire or open_fire (console will tell)
| | No mob rushes | director_no_mobs [1/0]
| | Play in first person (default), this cheat only necessary if thirdperson mode is enabled | firstperson
| | Removes all bots | Ent_Remove
| | Sets probability of infected ceda agents carrying bile jars | sv_infected_ceda_vomitjar_probability 0.1
| | Sets speed in noclipping mode (default is 5) | sv_noclipspeed #
| | Sets the amount of damage a Witch's attack does | z_witch_damage [#]
| | Sets the camera to be fixed in place whle in either third person or third person shoulder mode. Enter once to turn on and enter again to turn off | thirdperson_mayamode
| | Sets the camera to be in third person mode | thirdperson
| | Sets the camera to over the shoulder third person mode | thirdpersonshoulder
| | Sets the maximum amount of regular zombies | z_common_limit
| | Sets the maximum health of the tank | z_tank_health [#]
| | Sets the number of seconds until the player loses control of the tank from not attacking survivors | z_frustration_lifetime [#]
| | Sets whether or not bots (and only bots) are allowed to do friendly fire damage | sb_friendlyfire
| | Shuts off all wanderers, mobs, specials, and bosses | director_stop
| | Spawn 1 zombie | z_spawn zombie
| | Spawn a active pipebomb under you | boom
| | Spawn a special infected | z_spawn [bossname]
| | Spawn a zombie horde | z_spawn mob
| | Spawn boomer at location of crosshair | z_spawn boomer
| | Spawn hunter at location of crosshair | z_spawn hunter
| | Spawn smoker at location of crosshair | z_spawn smoker
| | Spawn tank at location of crosshair | z_spawn tank
| | Toggles no clipping mode | noclip
| | True/false setting that allows the witch to change targets instead or focus on the one survivor that alerted her first | z_witch_allow_change_victim [1/0]
| | Unlimited ammunition | sv_infinite_ammo 1
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| 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. |
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| 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. |
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| 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. |
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| Easy The Quick And The Dead Achievement |
| Adrenaline shots can be found on any level. Use an adrenaline shot then quickly revive a teammate 10 times for this Achievement. You can do this in certain safehouses in single player. Find a safehouse, like the first one in the Parish at the end of Act 1, and shoot your teammates until they are incapacitated. Use a shot, then quickly revive all three of them. Grab another shot and repeat this process a few times to get the Achievement. |
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| Extra Special Ammunition Glitch |
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Deploy an ammunition upgrade in a ending safe room and have 3 people take it and left it with 1 instance left, close the door. When the next level loads the ammunition upgrade will still have 4 instance and all survivor previously grabbed the upgrade will still have their upgrade from previous level.
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| Ghost Mode Glitch |
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In ghost mode, you will still stumble when a charger charge past you.
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| 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. |
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| International Weapons |
There are 4 special weapons exclusive to the German version of L4D2. However, you can spawn and use them in other versions of the game by following these steps:
1) Open the developer console (Press ~ (Keyboard might vary in different regions))
2) Type sv_cheats 1 (You will get a confirmation note if you done it right).
3) Type in these codes for the weapons: give_rifle_sg552 (The SIG 552 Commando), give_smg_mp5 (The MP5), give_sniper_scout (The Scout Tactical (Sniper Rifle)), give_sniper_awp (The AWP Magnum Sniper Rifle).
4) Note these weapons WILL NOT deal damage. In order for them to do so, you must proceed to another level from the level you spawn them in) or just simply reload the map.
Extra notes:
1) If you start another campaign, the weapons WILL STILL do damage. However, restart the game will require you to repeat all the steps for them to deal damage again.
2) They are ported weapons from Counter Strike: Source.
3) There is a fifth International Weapon, The Knife (The Combat Knife, Melee weapon), which cannot be spawned via developer console. In order to do so, you must hack the game file for this weapon but doing this is NOT recommended unless you have a backup save file.
4) Some versions of L4D2 cannot spawn them while most can.
5) Enable cheats WILL block you from earning achievements.
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| Pipebomb Flying Glitch |
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Firstly, throw a pipebomb in front of you have back FACED where you want to go. When the pipebomb exploded you will be stumbled, repeatedly press the switch button and you will hover backwards while unlimiting stumbled, it can hover above EVERYTHING, if you hit an object you will fly up until there is nothing blocking in front. However, infecteds can still attack you and the worst thing can happen is the smoker constrict you or ridden by a jockey while hovering, discontinue press the switch key will end the glitch.
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| Scope Glitch |
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If you empty the whole ammo of any weapon, swap it for a hunting rifle/ sniper rifle. Use the scope feature, then pick up empty weapon you just dropped, you will be switched to your pistol(s)/melee weapon while still zoomed in.
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| Silenced Pistol Glitch |
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If you hold down the shove button and fires your pistol(s) while incapacitated, your pistol(s) will not make any sound.
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| 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.
| Achievement | How to unlock |
| 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.
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| Tank Object Glitch |
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If you go up to an object that was previously punched by a tank, you can get incapacitated or killed. This might be due to the object is still moving slightly instead of staying still.
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| The Passing Achievements |
Complete each requirement in "The Passing" DLC to obtain these Achievements.
| Unlockable | How to Unlock
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| CACHE GRAB | Open 5 foot lockers.
| | FORE! | Knock the heads off of 18 Infected with the golf club.
| | GRAVE ROBBER | Collect 10 items dropped by a Fallen Survivor.
| | KILLING THEM SWIFTLY TO THIS SONG | Play the new Midnight Riders song on the jukebox.
| | KITE LIKE A MAN | Kill a Tank with only damage by the original Survivors.
| | MUTANT OVERLORD | Play 6 Mutations.
| | PORT OF SCAVENGE | Play 5 full games of Scavenge on The Port.
| | TIL IT GOES CLICK | Kill 25 Infected without letting go of the trigger while using the M60.
| | TORCH BEARER | Beat The Passing Campaign.
| | WEDDING CRASHER | Crash a survivor through 8 chairs at the Wedding as a Charger.
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| Trashcan Glitch |
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Hit a green trashcan with a melee weapon and it goes flying, if it hits you you will be damaged by 1 point of health regardless of difficultly.
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| Witch Glitch |
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Throw a gas can close to a WANDERING witch and shoot it with a grenade launcher INDIRECTLY, the witch will be set on fire but will not be startled.
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