Left 4 Dead

Left 4 Dead
Fight together...or die alone. A new and highly virulent strain of the rabies virus emerges and spreads through the human population with frightening speed. The pandemic's victims become grotesquely disfigured, wildly violent psychopaths, attacking the uninfected on sight. One of the "lucky" few apparently immune to the sickness, you, unfortunately, are also trapped in a city crawling with thousands of the bloodthirsty Infected. Together with a handful of fellow Survivors, you must fight your way to safety or die alone. A co-operative multiplayer action game from the makers of...
Fight together...or die alone. A new and highly virulent strain of the rabies virus emerges and spreads through the human population with frightening speed. The pandemic's victims become grotesquely disfigured, wildly violent psychopaths, attacking the uninfected on sight. One of the "lucky" few apparently immune to the sickness, you, unfortunately, are also trapped in a city crawling with thousands of the bloodthirsty Infected. Together with a handful of fellow Survivors, you must fight your way to safety or die alone. A co-operative multiplayer action game from the makers of "Counter-Strike," Left 4 Dead is built atop the most advanced version of the Source Engine and introduces version 2 of Turtle Rock's artificial intelligence (A.I.) technology.
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Description
Left 4 Dead
Fight together...or die alone. A new and highly virulent strain of the rabies virus emerges and spreads through the human population with frightening speed. The pandemic's victims become grotesquely disfigured, wildly violent psychopaths, attacking the uninfected on sight. One of the "lucky" few apparently immune to the sickness, you, unfortunately, are also trapped in a city crawling with thousands of the bloodthirsty Infected. Together with a handful of fellow Survivors, you must fight your way to safety or die alone. A co-operative multiplayer action game from the makers of...
Fight together...or die alone. A new and highly virulent strain of the rabies virus emerges and spreads through the human population with frightening speed. The pandemic's victims become grotesquely disfigured, wildly violent psychopaths, attacking the uninfected on sight. One of the "lucky" few apparently immune to the sickness, you, unfortunately, are also trapped in a city crawling with thousands of the bloodthirsty Infected. Together with a handful of fellow Survivors, you must fight your way to safety or die alone. A co-operative multiplayer action game from the makers of "Counter-Strike," Left 4 Dead is built atop the most advanced version of the Source Engine and introduces version 2 of Turtle Rock's artificial intelligence (A.I.) technology.
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Publisher
Certain Affinity, Electronic Arts
Developer
Certain Affinity
Genre
Action > Shooter > First-Person > Arcade
Release Date (US)
08/21/2012
Release Date (EU)
08/21/2012
Release Date (JP)
09/17/2009
Cheat Codes/Hints
Invincibility while reloading
Press B to reload, then hold LT 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.
Kick-Ass reference
The "Red Mist" achievement or trophy is the name of the superhero that is the son of the antagonist, has the awesome red car, and is the fourth superhero you see in the movie.
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.
Minigun launcher
Go to any mounted minigun on any level. Stay behind it and start to melee it. You can do this by yourself or get other people to do this. 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.
No Mercy Gas Station Lure Tank
When on No Mercy's Gas Station level have a player pull the switch to lure in the horde. Eventually a tank will appear in the fighting. If the survivors are desperate they can send out a survivor to distract the tank. The survivor will then run to the Gas Station with the tank following him (hopefully). After that have him or another survivor blow up the Gas Station. The tank will be dead but so will the player that lured him there. This is a good way to have low-health survivors heal in this area.
No Mercy level 3: 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 subway door glitch
In No Mercy subway get to the part where you open the garage door that turns on the power. Beside the door there should be two tanks with a little circle sticking out of them. Try to jump on the circle, then try to jump on top of the tank. When you're on the tank jump onto the door.
One shot kill with a pistol
When using your pistol, if you shoot and hit the melee button just a split second afterwards (it should look as though you meleed, and shot in the middle) you should get an instant kill with your pistol. Note: This was only tested on easy mode.