Call of Duty 4: Modern Warfare Tips & Tricks

In the map District walk up the stairs and jump on to the concession stand right in front of you. Then, jump on to the arch next to you. Now walk up it until you're able to pull yourself up. It's a great place for sniping.

Backlot is a good map for sniping. There is a awsome sniping spot for the better players, if yo find the large building in the centre of the map and go up to the mounted gun look to the right and in the distance there is another mounted gun, go to that spot its a building with stairs and a sort of dinner hall place and go up stairs to the spot. be warned your opponent can come up too so leave him a bomb or somthing that goes boom and you can sniper around 60% of the map.

On Overgrown if you go in the middle of the stage and look to the north you will see a building and a fence in front of it. Go to the right of the fence and you should see a wall (hill) that cannot be climbed on. If you look at the wall (hill) you will see a black mark on it. If you go to the end of the mark (closest to the right) and look at it, then go up to it and keep jumping at the mark while walking into it, soon you will be inside of the hill. Once you get through stop or you will die. Once you are through you can shoot enemies but they cannot kill you unless they shoot you with a rocket or go up to you and push you into the black floor. You should put bandolier on your gun so you dont run out of ammo and have a smoke grenade so you have time to get in.

Go to the little revine thing, under the bridge, go until the 2 fences ends to where u can get up, there should be a big spot on the rocks where it looks darker, then you go there and repeatedly jump up and up up and down (This glitch CANNOT be cone on oldschool.) untill you're in, I reccomend you practice first with a friend to find the correct spot to go in it, and oh yeah, dont go to far, you'll fall in a huge black spot, and you'll die. so be VERY careful.

Set the game type to old school mode. Then go to the far corner of the map to the bombed out building. There is a chair against the wall. Jump on the chair. then jump on the small ledge in the wall. Jump up to the third floor. There is a piece of the wall. Jump on the tallest one then jump on the roof. Walk to the right. Walk in the air right against the wall until you are straight above the barb wire. You can walk straight across the wire in mid air. From there you can snipe your anybody.

Go to Crossfire and at the very end there will be a building that has a chair and a washing machine. If you hop up on the chair, then on the stair like wall, you will see a big rock sitting on a ledge. Jump on the ledge and then the rock. If you are on the top of the rock there will be another ledge. Jump on it. Then if you are still facing the outside of the map turn right and look at the building. If you go to the building there will be a crack if you step into it you'll be flying.