At the main menu, use the Right Analog-stick to look down at your
hands and see you are locked up. Repeatedly press LT + RT to escape from
the chair (unlocks the "Just Ask Me Nicely" secret achievement). After
breaking free, move around to the area behind your chair to find an old computer
terminal you can use to access the Central Intelligence Agency Data
System. Type one of the following codes to access early unlockables and
hidden features in the game. Note: You can also plug a USB keyboard into your Xbox 360 to enter the codes and play the Zork text-based adventure game
Mission select, "Five" Zombies mode map, Dead Ops Arcade game, and Zork game
Enter "3ARC UNLOCK" as a code to unlock the "Five" Zombies
mode map, Dead Ops Arcade game, Zork: The Great Underground Empire
text-based adventure game, and all missions.
Enter "3ARC INTEL" as a code to unlock all Intel. Note: Enabling this code will prevent the "Closer Analysis" achievement from being earned.
Alicia game
Enter "ALICIA" as a code to unlock the Alicia virtual therapist game.
Dead Ops Arcade game
Enter "DOA" as a code to unlock the Dead Ops Arcade game, which is a zombie killing mini-game similar to Smash TV. Use the Left Analog-stick to move and the Right Analog-stick to shoot. Note: Play the Dead Ops Arcade game to get the "Insert Coin" achievement.
Zork game
Enter "ZORK" or "HELLO SAILOR" as a code to unlock the Zork: The Great Underground Empire text-based adventure game. Note: Play the Zork game to get the "Eaten By A Grue" achievement.
Display all commands
Enter "HELP" as a code to display a list of system commands in the terminal and Pentagon user e-mail access.
Open corresponding file
Enter "CAT [filename]" or "PRINT [filename]" as a code to open the corresponding file.
List audio files and pictures
Enter "DIR" as a code to display a list of audio files and pictures for use with "CAT" command.
List of login names
Enter "WHO" as a code to display a list of login names for use with the "RLOGIN" command (requires passwords).
Login
Enter "LOGIN" as a code to login with a corresponding username and password.
Open mail folder for current user
Enter "MAIL" as a code to open the mail folder for the current user.
Display contents of current directory
Enter "DIR" or "LS" as a code to display the contents of the current directory.
Encode a string using the CIA's cypher
Enter "ENCODE" as a code to encode a string using the CIA's cypher.
Decode a string using the CIA's cypher
Enter "DECODE" as a code to decode a string using the CIA's cypher.
Display "Fee Fie Foe Foo!"
Enter "FOOBAR" as a code to display "Fee Fie Foe Foo!".
Dreamland server
Access the Central Intelligence Agency Data System. Enter "rlogin dreamland"
as a command. You will be prompted to login with an account with MJ12
access. Use one of the following usernames and passwords to continue:
Login as Robert Oppen: Username: "roppen", Password: "trinity"
Login as T. Walker: Username: "twalker", Password: "thanksdad"
Login as Vannevar Bush: Username: "vbush", Password: "majestic1"
Hidden Thunder Gun in "Numbers" mission
At the beginning of Mission 7: Numbers, after the Nova 6 Gas is
released, go to the back of the room, and enter the office. Find the
tape recorder, and hold [Action] to pick it up. If done correctly, the screen
will shake. Continue through the level until you get to the part where
you jump off the roof into the building and onto the mattress. Once
Clarke is inside, he will move a fridge leading to the weapon stash. You
must watch him move the fridge or you will not get the Thunder Gun.
Once you get inside the stash, go to the left. You should see another
tape recorder. Walk up to it, and hold [Action] to pick it up. If done
correctly, the screen will shake and the Thunder Gun will appear from
the wall. You can trade the weapon you are holding for it, and it will
be equipped with twelve shots. After you get the Thunder Gun, the rest
of the level should be very easy.
In Mission 7: Numbers, after interrogating Clarke, several enemy
soldiers will appear at the end of the long hallway. If you shoot all
six Nova 6 canisters (two in the back, four on the sides), you can
retrieve a cassette tape in the office behind where you started. Note:
It is recommended that you toss a flashbang to blind the enemies so you
can shoot the canisters more easily. Once you pick up the tape,
continue progressing through the mission until the part where Weaver and
Clarke both jump off the roof and onto a mattress. After they jump
down, Clarke will ask Weaver to help him move a fridge out of the way to
his first weapon stash. Once they do, go inside, and look to the left.
There should be a place to put the cassette. Note: When picking
up and placing the cassette tape, the game will not prompt you to do
anything -- you must use this information to know when to do these
things. Once you insert the cassette tape, the screen will shake, and
the Thunder Gun will appear out of the wall. It has twelve bullets, and
it is reloaded at checkpoints.