Look down at your hand when you are locked up at the title screen. Repeatedly press ZL + ZR on a Classic Controller to escape from the chair. Move around the lab and find a computer. Type in the following commands to activate the corresponding feature.
3ARC INTEL: View all intel.
3ARC UNLOCK: Unlock Dead Ops Arcade and Presidential Zombie mode.
ALICIA: Alicia virtual therapist game.
CAT or PRINT<filename>: Open corresponding file.
DECODE: Decode a string using the CIA's cipher.
DIR or LS: Display contents of the current directory.
DIR: List audio files and pictures for use with CAT command.
DOA: Zombie killing mini-game similar to Smash TV.
ENCODE: Encode a string using the CIA's cipher.
FOOBAR: Displays "Fee Fie Foe Foo!"
HELP: List commands.
LOGIN: Attempt a new session with a corresponding username and password
MAIL: Open the mail folder for the current user.
WHO: List of login names for use with the RLOGIN command (requires passwords).
ZORK or HELLO SAILOR: Zork: The Great Underground Empire text adventure game.