At the main menu, select the "Enter Cheats" option, then press B(2), X, Y.
Easy kills
Have a rifleman, sniper, and a demo or support. Use your sniper when the threat indicator indicates that there are men from afar (yellow). Use your rifleman when it turns orange, and your support or demo when it turns red.
Get on top of the main bridge in Pagoda
To get on top of the main bridge at the start of the map, lay down directly under the edge of the bridge. Roll up towards the hill while looking at the water. You will start to see yourself flicker on top of the bridge. After a few times, you will be able to stand up and walk around. The only way to get down is to lay down and crawl backwards. You will fall to the bottom with no health damage. Note: This works on squad matches.
Invincibility (self)
At the main menu, select the "Enter Cheats" option, then press B(2), X, A. Your first soldier will be invincible, but the remaining members of your platoon can still be harmed.
Invincibility (team)
At the main menu, select the "Enter Cheats" option, then press B(2), X, B.
Lay down under water in Pagoda
Follow the directions to perform the "Get on top of the main bridge in Pagoda" glitch. Once on top of the bridge, look down and line yourself up with the river. Turn around and lay down, then crawl backwards off the bridge. If done correctly, you should land in the middle of the river, still laying down. You will have a clear view of the valley in front of the bridge, and be able to shoot at anyone, but nobody will be able to see you. Note: Be careful when using a grenade launcher. The grenade will detonate on the surface of the water at times.
Lay down with rocket launcher
While crouching, press Down to lie down. Before you finish lying down, select the rocket launcher. You must be fast and may need to practice. Once mastered, it is a very useful glitch. It works in all modes, including Squad on Xbox Live.
Medals
Bronze Star: Get 15 kills.
Silver Star: Get 20 kills.
Distinguished Service Cross: Get 25 kills.
Congressional Medal Of Honor: Get 30 kills.
Purple Heart: Get wounded or killed in action.
Refill ammunition
At the main menu, select the "Enter Cheats" option, then press B(2), X(2).
Sniper zoom on any weapon
Start a two through four player mission. Immediately kill one of your friends when you start. The killed player can now cycle through the other players' screens, and can zoom as if the gun where a sniper rifle. Have whoever wants to use the dead person's screen use it. The dead player can control the zoom, while the other player moves the character. Note: This is extremely useful if the person that operates in the dead player's screen has a heavy machine gun.
