Getting to the Blue Key Slot (5)

From the [Forcefield Room], go to the elevator and ascend to face a Captain and a Trooper.

After defeating them, take the elevator up to find Shotgun Shells.

Open the computer screen with Earth on it (the right one) to obtain a Holoduke.

Use the Blue Key to unlock the door behind the forcefield, being cautious of Enforcers inside.

Enter the [Observing Room] and use the elevator.

Upon stopping, you'll be attacked by Enforcers. Collect Shotgun Shells, Pistol Ammo, and a Large Medikit from the floor.

Jump on the green box to reach a shelf and acquire a Jetpack.

Use the Jetpack to fly up to the left for Atomic Health.

Shoot the orange canisters and enter the resulting room.

Collect Shotgun Shells and press the wall switch, which causes Enforcers to drop from the ceiling.

Go up the ramp to find a Large Medikit and Pipebombs.

Interact with the four switches using the code O O X O to deactivate the forcefield.

In [SECRET 4], Jetpack up the forcefielded pipe to the top. Defeat the attacking Enforcer and collect the Devastator and Atomic Health where it died.

For [SECRET 5], return to the ledge with Atomic Health. A timed door will open. Jump down the large pipe to the water, exit, turn around, and enter the small open door between the elevator and the main door to find two RA (Radiation Suits).

In the [PIPE] section, opposite the previous secret room, you can go higher up the pipe to find Night Vision Goggles and a Large Medikit at the very top.

At the bottom of the pipe, underwater, find the Red Key.

Locate a switch underwater that opens a compartment containing two Atomic Health and a Jetpack above the switch.

Return to the [Observing Room Hallway] via the pipe. Go up the ramp and through the door.

When the hallway narrows, the floor will collapse. Use your Jetpack before hitting the ground if you fall.

In [SECRET 6], exit to a room at the bottom. Fight an Enforcer and collect the Shrink Ray, Body Armor, and a Large Medikit. Entering this room counts as the secret.

In the [Observing Room Hallway], follow a small hole in the wall to find a Large Medikit.

Use the small elevator, hit the switch, and return to the observation room.

Exit to the hallway, jump over the hole, and use the Red Key.

Warning: Before opening the next door, be aware of a Sentry Drone inside that will explode.

Open the next door, collect the Large Medikit, and end the level.