Black Cheats

BFG (M249 SAW) in City Streets level
Enter 5SQQ-5THA-ZFFV-7XEV as your profile name. After selecting "Done", you will be able to re-enter an actual profile name. This is how you know the code was accepted. When you begin the first level, you will have the BFG weapon.

Silver weapons
Successfully complete the game under the normal or hard difficulty settings. All guns will now be silver and have unlimited ammunition.

Black Ops difficulty setting
Successfully complete the game on the hard difficulty setting.

M16A2
Successfully complete the game under the Black Ops difficulty setting. You will now have the M16A2 (M16 with grenade launcher attachment) on every level.

Cursor Color
Play the coloured game and pay attention to your reticule. When it shifts colour from white to another colour, you are targeting something interesting:

Red - hostile target
Blue - destructable secondary objective
Black - destructable environment
Green - friendly