Getting the Red Key (7)

Entrance: Start by destroying a Slimer Egg near the entrance and breaking the grate to proceed.

Foyer: Collect Pipebombs and a Pistol. Activate the middle switch to open the main Tiberius Station door and the right switch to turn on lights. Jump through small windows in the wall to access the Armory (right door) and Supplies (left door), which are on timed locks.

Armory: Find a Shrink Ray, Night Vision Goggles, Shotgun Shells, Chaingun Cannon Ammo, and Shrink Ray Ammo. Be aware of Slimers.

Supplies: Collect Body Armor and a Large Medikit from a fridge. More Slimers are present.

SECRET 1: Between the shelves in the Supplies room, find a secret door leading to a Portable Medikit.

Mirror Hallway: Proceed through the hallway.

SECRET 2: Upon entering the room with the mirror, look upper right to find a crack in the wall. Destroy it to access vents containing Shotgun Shells.

Mirror Hallway (continued): Use the mirror to spot Troopers. Enter the hallway to the left and go up the elevator.

SECRET 3: Before the elevator, go down a dark hallway to the right. After killing Slimer Eggs, walk through a wall opposite the water fountain to find Pipebombs.

Computer Room: After taking an elevator (one has a Captain), you'll reach the computer room with two Captains. Find the Blue Key, a Shotgun, and Pistol Ammo. The left compartment contains a Holoduke. The left switch turns on lights, and the right switch opens a timed door visible from the window.

Red Light Room: The right switch opens a timed door. Prepare for three Enforcers inside; an RPG is recommended. Quickly enter before the door closes. On a pedestal is a Devastator. Jumping on the pedestal leads to a shelf with Atomic Health and a monitor. Exiting reveals Octabrains have spawned in the Mirror Hallway.

SECRET 4: To the left of the Red Light Room door, find a secret door leading to a room with an Enforcer and Night Vision Goggles. Open a compartment on the right wall for Steroids and Chaingun Cannon Ammo.

Bridge Hallway: Go to the large steel door at the end of the Mirror Hallway. Sentry Drones will attack, but red lasers indicate Laser Tripbombs. Close doors to let drones detonate them. Encounter Enforcers on a bridge and ground level; shooting the bridge with explosives will break it. A Large Medikit is beside the next door.

Washroom: Enter the left door to find a Captain, Laser Tripbombs, Chaingun Cannon Ammo, Pistol Ammo, and a Large Medikit. A Trooper is in a stall. Close the door upon entering to avoid Sentry Drone attacks. The wall switch controls lights.

Hallway: Continue down the hallway. A mirror reflects an Enforcer you can defeat with a ricocheted Shrink Ray blast. Two neutral Laser Tripbomb traps activate as you approach. Let the Enforcer detonate them or explode canisters for a wall fracture containing an RPG, Chaingun Cannon Ammo, and an attacking Enforcer.

Service Access: Use the Blue Key to open the door. You'll enter a room with an acid pool. Protective Boots and an elevator are to the right. A Large Medikit is to the left. Octabrains are above the acid pool.

SECRET 5: While crossing the bridge from the switch, jump off to the left into an indentation in the wall. Swim to the indentation and open the wall at the surface to find two Atomic Health.

SECRET 6: Follow SECRET 5 instructions but drop off the third platform to the left. Find RPG Ammo in this room.

Acid Pool: Enter the acid pool to get the Red Key. Near the entrance, find Night Vision Goggles and Shotgun Shells. Swim the perimeter to collect the Red Key and a Portable Medikit. Use the elevator to exit the acid.