Call Of Duty 3 PlayStation 3 Cheats

All level
At the Chapter screen hold Select button and input Right, Right, Left, Left, Square, Square.

Invincibilty
(Hold L2) square, triangle, triangle, square (Release L2 then hold R2) triangle, square, square, triangle

Enhance Weapons
(Hold L2) L1, L1, L1 (Release L2 and hold R2) R1, R1, R1

Veteran Interviews
Successfully complete the game to unlock interviews with veterans Gordon Boulton, Sgt. John D. "Bud" Hawk, and Sgt. Stan Markut.

Good gun in Island mission
On the second mission, "The Island", there will be a man under the second bridge with a FG42 scoped. That gun will get more ammunition every time you kill someone. The gun starts with 96 ammo remaining and you can kill about 150 people with it (not including melee). After completing that mission you will have that gun on the third mission, but you must save the gun through the third mission to get it in the fourth mission and so on.

Easy completion
Night Drop mission: When you meet up with the French rebels you will have a choice to go left to the Flak 88s or go through the house to the right. Go left to the guns. Kill all the Nazis around the gun and in the ditch leading to the next gun. Then, blow up the 88 and move on to the rest of the guns. After you blow up all the guns you will reach the house that you would have had to take if you went right. When you go in the house you must defeat a Nazi that is standing there waiting for you. Kill all the enemies in the house and fall through the burning floor. You will see you allies there waiting for you.

Multi-player mode: Avoid being seen
When playing in multi-player mode, you can avoid being seen by going into the tall grass. Keep moving back and forth because the enemy can see you because of the red hash marks.

The Mace mission: Scoped FG42
When you get to the part where you must keep the Nazis from the trenches, do not listen to the men. Go to the right and follow the path. You will find an FG42 scoped leaning on a crate.

Night Drop mission: Easy completion
When you meet up with the French rebels you will have a choice to go left to the Flak 88s or go through the house to the right. Go left to the guns. Kill all the Nazis around the gun and in the ditch leading to the next gun. Then, blow up the 88 and move on to the rest of the guns. After you blow up all the guns you will reach the house that you would have had to take if you went right. When you go in the house you must defeat a Nazi that is standing there waiting for you. Kill all the enemies in the house and fall through the burning floor. You will see you allies there waiting for you.

Get FG42 (Mace mission)
When you get to the part where you must keep the Nazis from the trenches, do not listen to the men. Go to the right and follow the path to find an FG42 scoped leaning on a crate.

Eder dam
At the far south of the map there is a house that has a motorbike close to it, get in the motorbike, go to the house on your left as soon as you get on the bike, drive it into the garage but get your soldier as close as you can the the left wall, get off the motorbike and presto, perfect snipering position.