Enter codes at the typewriter. Turn them on at the Bonus screen.
Go to the typewriter and type in FRESH DEMO. Then exit out to the homescreen and wait. Wait it out for a few moments and a gag reel will play.
During gameplay, pause and press: CIRCLE, L2, SQUARE, L1, SELECT, R2, TRIANGLE, SELECT. If done properly, the game will automatically unpause.
Pause the game and enter: SQUARE, L1, CIRCLE, R1, TRIANGEL, L2, SELECT, R2
To turn on One-Hit Kills, go to the Passwords selection in the options menu. At the typewriter, enter the following code: WHATYOUGET. Then back out and go to the Bonus screen and check the cheat to On.
To unlock the Storm in the Port mission, go to the Passwords selection in the options menu. At the typewriter, enter the following code: ORANGUTAN. This will make the level selectable from the Play screen.
Enter DAWOIKS at the typewriter.
To unlock Horten's Nest mission, go to the Passwords selection in the options menu. At the typewriter, enter the following code: GORILLA. This will make the level selectable from the Play screen.
To unlock the Invisible Enemy cheat, go to the Passwords selection in the options menu. At the typewriter, enter the following code: WHERERU. Turn it on at the Bonus screen. This code allows you to snipe with any weapon.
To unlock Mission Skip, go to the Passwords selection in the options menu. At the typewriter, enter the following code: MONKEY. Then back out and go to the Bonus screen and check the cheat to On. This will allow you to complete the current mission with a Gold Star. Snazzy, eh?
To unlock the Perfectionist cheat, go to the Passwords selection in the options menu. At the typewriter, enter the following code: URTHEMAN. Turn it on at the Bonus screen. This code allows any Nazi to kill you with one shot. Fancy that.
To unlock the Rolling Thunder mission, go to the Passwords selection in the options menu. At the typewriter, enter the following code: LEMUR. This will make the level selectable from the Play screen.
To make grenades bounce all willy-nilly, go to the Passwords selection in the options menu. At the typewriter, enter the following code: BOING. Then back out and go to the Bonus screen and check the cheat to On.
To unlock the Snipe-o-Rama cheat, go to the Passwords selection in the options menu. At the typewriter, enter the following code: LONGSHOT. Turn it on at the Bonus screen. This code allows you to snipe with any weapon.
Beat the game with a gold star in every mission to get the EA LA Medal of Valor.