Rainbow Six - Black Arrow - Platform: XBox

God mode:
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Press Up(2), Down(2), Left, Right, Left, Right, B, A during game play. 
The message "God Activated" will appear to confirm correct code entry. 
Note: This only seems to effect you, and not your team or hostages.

Credits level:
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Click Left Analog-stick(2), click Right Analog-stick(2), 
press X, Y, B, A, B, A at the main menu.

Switch to terrorist hunt map:
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Once online, go to mission then return to team survival. 
Choose Hotel or Nuclear Facility. Instead of being the original 
map for it, it will be the Terrorist Hunt map. The terrorists are 
still in the game -- be careful. Also, it might have "0" next to 
the stars for your connection and it will not rise. This also makes 
it slightly more extreme to see if you and your opponents can work 
together, then afterwards kill each other.

Laser trails:
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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.