# M468 Assault Rifle

At the "Press Start" screen, hold RB and press Up, Y, Down, A, Left, X, Right, B, Left(2), Right, X to unlock the M468 Assault Rifle. This 6.8mm assault rifle is a high powered weapon and fires 750 rounds per minute. This weapon has an effective combat range of 600m, is ideal for defeating armored targets, and is best suited for long range encounters.
# TAR-21 Assault Rifle

At the "Press Start" screen, hold RB and press Down(2), Up(2), X, B, X, B, Y, Up(2), Y to unlock the TAR-21 Assault Rifle. This 5.56mm assault rifle is compact and accurate and fires 850 rounds per minute. This weapon is ideal for Close Quarter Combat and is best suited for a close range assault weapon.
# One-hit kills

Pause the game in Single Player mode, then hold RB and click Left Analog-stick, Right Analog-stick, Left Analog-stick, Right Analog-stick, press A, B, click Left Analog-stick, Right Analog-stick, Left Analog-stick, Right Analog-stick, press X, Y. Note: This also enables one-hit kills for your player.
# GI John Doe mode

Pause the game, then hold RB and click Left Analog-stick(2), press A, click Right Analog-stick(2), press B, click Left Analog-stick(2), press X, click Right Analog-stick(2), press Y. If you entered the code correctly, the message "GI John Doe Mode" will appear. In this mode, blue and red lasers are shot.
# Stronger ragdoll effect

Pause the game in Single Player mode, then hold RB and press A(2), B(2), X(2), Y(2), A, B, X, Y. Note: You must be signed out of Xbox Live for this code to work in Story mode. It will work at any time in Terrorist Hunt mode.
# Third person view

Pause the game in Single Player mode, then hold RB and press X, B, X, B, click Left Analog-stick(2), press Y, A, Y, A, click Right Analog-stick(2). Note: You must be signed out of Xbox Live for this code to work in Story mode. It will work at any time in Terrorist Hunt mode.
# Big heads

Pause the game in Single Player mode, then hold RB and press B, X, A, Y, click Left Analog-stick, press Y, A, X, B, click Right Analog-stick.
# Comcast Optimized multiplayer map

At the main menu, select the "Extras" option. Choose the "Comcast Gift" option, then enter "Comcast Faster" as a case-sensitive password on the virtual keyboard to unlock the "Comcast Optimized" multiplayer map.
# Prequel bonus

Have a saved game file from Tom Clancy's Rainbow Six: Vegas with an "Elite" rank on your hard drive or memory card to get 2,500 experience points, the ballistic face mask, and flight helmet when starting a new game.

__________________
Rants
Faces Manager