: Stay close to the walls in the offices-cave area to reveal a secret entrance.

: Found within the laboratory complex, necessary to enter Lab B for the second test tube.

: Keep a Cricket Bat in your equipped slot; it is your primary melee weapon and never breaks. For firearms, the Magnum Pistol is highly recommended for its high damage and ease of landing headshots on zombies.

: For the computer in Laboratory C , use the password sequence: 77, 28, 53 .