God mode:
Press Up(2), Down(2), Left, Right, Left, Right, B, A during game play. The
message "God Mode" will appear to confirm correct code entry. Note: This only
seems to effect you, and not your team or hostages.
Laser trails:
Press Up, Down, Up, Down, click Right Analog-stick(2) during game play. Rainbow
weapons will shoot red laser trails and opposing force weapons will shoot blue
laser trails.
Sites: