Getting to the Red Key Slot / Getting to the Exit (3)

Control Room: Fight two Troopers on the upper ledge and an Octabrain on the lower ledge. Grab the Small Medikit on the upper ledge. Enter the control room, defeat the Captain and two Troopers. Collect Shotgun Shells by the lockers and find Night Vision Goggles and Microwave Expander Ammo inside them.

SECRET 3: Locate a switch to change the water level. Lowering the water reveals a Shrink Ray within a computer.

Infested Area: Destroy green canisters and ascend a ramp. Battle a weakened Octabrain and potentially an Alien Drone. A door will open, leading to an encounter with five Alien Drones. Find two Laser Tripbombs on the pop machine.

Office: Open the door near the pop machine to face three Enforcers. Collect two Large Medikits from the file cabinet and RPG Ammo from the trashcan. In the room where the Alien Drone emerged, dive into the water to find Scuba Gear at the bottom, and an RPG and Portable Medikit under pistons. Open the Red Key Door.

Street: This exit leads to two Pig Tanks on the street. Find RPG Ammo near a palm tree. Use your Shrink Ray and open the garage door. Immediately engage and defeat the waiting Commander. Proceed to the Exit Symbol within the garage.