Left 4 Dead

At the end where you do the farmhouse part, an easy way to win is fill up with ammo. Get the health kit and find the barn. Climb up the ladder. You can sometimes find a ammo supply. You can easily cover the window and the bottom of the barn, Be careful when you need to get a rescue.

In Campaign Live or Versus mode, if you hit the machine a number of times then jump on top of it in a certain direction, it will send you across the screen.

Note: This requires an unpatched version of the game. 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.

In Survival mode (obtained by downloading the Survival Pack from the Xbox Live Marketplace), play Dead Air: Crane. This trick requires at least two people, but is more fun with four. If playing with three or four people, have one person hold A and run off the building onto the truck below. If done correctly you will be incapacitated. Have the next person run off while holding A + X. If done correctly, the second person will float down and sustain only 40 to 60 points of damage, but will be able to revive the person that is incapacitated. If playing a three person game, leave the incapacitated person for the next player to use to get down after activating the crane or leave the third person on the roof to die with the bot. On a four person game, have two people run off holding A, one person run off holding A + X, and leave one person on the truck for the person activating the lift. when You try this with only two people, one person must be incapacitated, and the other person must start the lift and run off while holding A + X, otherwise you cannot get to the street. You then must use your pain pills or health pack. Note: Do not use both, but the pain pills are the recommended choice. One at a time, jump from the hood of the truck and get past the wooden pole. Three things can happen when you do this.

• If you land past the pole you will sustain no damage and are officially on the street.
• If you land next to or near the pole, you will be incapacitated but will not die. Have someone revive you.
• If you land behind the pole, you will be incapacitated but will die immediately afterward. If someone tries to revive you they will also become incapacitated and die. If this happened, you have landed behind the point known as the "death barrier". If at any time you decide to walk past the wooden pole you will automatically die.

If you are on the street between the first two building you walk to, walk forward from where you land to find an alley. In this alley you cannot be attacked by zombies, and if a Tank tries to enter the alley he dies. However if you let a Tank follow you and are hanging out on the sidewalk and he is close enough to punch you, he can get into the alley. Note: If you jump rather than run off the building during the first step you will die even if you land on the truck. If you are going to revive an incapacitated person that is on the truck, do not jump off. Doing so will incapacitate you. In order to get past the pole you must use either the pain pills or health pack unless you are already in green health. Being in the alley for a long time will get boring. If you want to shoot zombies, stand on the sidewalk and shoot any zombies that come your way. You cannot be attacked by the Smoker Tongue unless you decide to stand in the street, but you can still be attacked by any other zombie (Hunters, Common, Boomers, Tanks). If you plan on staying on the sidewalk, bring any weapon of your choice but for extra fun bring the hunting rifle so you can snipe zombies off the rooftop.

Note: This requires an unpatched version of the game. 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.