Infinite ammunition:
Enter "MERCENARIES" as a code. Then, create a new profile and begin the game. Note: This effects gun ammunition, but not grenade ammunition.
Authentic mode:
Enter "SWEDISHARMY" as a code. Then, create a new profile and begin the game. This is a more difficult version of the game, without the HUD.
U.S. Army version:
Enter "HA2P1PY9TUR5TLE" as a code. Then, create a new profile and begin the game.
Concept FMV sequence:
Successfully complete the game to unlock the Concept FMV sequence.