Hobbies And Interests
Instructions
At the main menu, break free from the bonds that hold Alec Mason by alternately hitting the left and right triggers on Xbox 360 and PS3, holding the spacebar on the PC or shaking your Wii remote and Nunchuk on the Wii. Alec will break out and stand up.
Move Alec to the left around the chair and find a computer near the back of the room.
When prompted, press the correct button and you will log in to the computer.
Enter the code 3ARC UNLOCK using the on-screen keyboard. This will unlock all single-player campaign levels as well as all Zombie mode levels.