At the title screen, use the Right Analog-stick to look down at your hand when you are locked up. Repeatedly press L1 + R1 to escape from the chair. Move around the lab and find a computer. Type in the following commands to activate the corresponding cheats:
View all intel.
Unlock Dead Ops Arcade and Presidential Zombie mode.
Alicia virtual therapist game.
CAT or PRINT
Open corresponding file.
Decode a string using the CIA's cipher.
List audio files and pictures for use with CAT command.
DIR or LS
Display contents of the current directory.
Zombie killing mini-game similar to Smash TV. Use the Left Analog-stick to move and the Right Analog-stick to shoot.
Encode a string using the CIA's cipher.
Displays "Fee Fie Foe Foo!"
Attempt a new session with a corresponding username and password
Open the mail folder for the current user.
List of login names for use with the RLOGIN command (requires passwords).
ZORK or HELLO SAILOR
Zork - The Great Underground Empire text adventure game.