Cheat mode:
Press [keypad enter] during game, then type one of the following codes to activate the corresponding cheat:

Effect Code
Invisibility for character shadow
Invisibility for team teamshadow
God mode for character superman
God mode for team teamsuperman
Unlimited Ammo ammo
Refil Ammo refil
Run faster than normal run
Suicide god

Note: When you use "teamshadow", your team WILL NOT shoot the enemy! I believe that other support teams will shoot, but I am not sure. This was the same as in Ghost Recon. It sucks, doesn't it?