Spoilers Alert

For XBOX 360

On the start screen whilst lookinf at the selection of multiplayer zombies etc, Wiggle the left stick and pull the triggers repeatidly!

You will break free from the chair!

Move to the computer and hold X and type the following.

ZORK (enter)

QUIT (enter)

Y (enter)

DOA (enter)

you will enter Dead Ops Arcade!

CIA Database Computer Codes

On the Main Menu, and press the Aim and Shoot buttons repeatedly. After about five times for each button, you'll break free of your interrogation chair. When you get up, walk around behind you to a computer. When you access it, enter the following using the on-screen keyboard.

3ARC INTEL

Unlocks all Intel in the game for viewing

3ARC UNLOCK

Unlocks Dead Ops Arcade and Presidential Zombie Mode

3ARC INTEL (code is a play on Treyarch's name) Unlocks all the audio intel in the game for viewing and accordingly, disables the trophy or achievement when done (reboot the system to reinitialize this condition).