B,B,X,B: Team God Mode.
B, B, X, X: Refills used (can be entered multiple times).
B,B,X,Y: Pass that current mission.
To use these codes, start up a single player campaign. When the mission starts, pause the game and go into "in-game options" and go under "enter cheats" and enter the following. B,B,X,A: God Mode (Individual).