Getting to the Exit (4)

In the Lock Room, hit the "Emergency Lock" switch to get shrunk, then re-enter through the hole.

Go through the door opened by the emergency switch and enter the pool in Underwater Building 1, emerging in an underwater room with two Small Medikits and some Shotgun Shells.

Exit the building and swim left, avoiding the first mine. Defeat the Octabrain, then shoot the second mine to open a fissure containing a Chaingun Cannon, Chaingun Cannon Ammo, and an Octabrain.

Enter the building with the yellow column (Underwater Building 2) to find Shotgun Shells and a switch that raises the water level. Hit the switch and swim to the surface. The door in this room cannot be opened yet.

On the surface, go to the lowest platform to find two Small Medikits and face an Octabrain, a Captain, and two Troopers.

SECRET 7: On the right slanted platform, jump to a hole in the rock face containing RPG Ammo. A further ledge inside holds a Portable Medikit and a Shotgun.

Go to the left ledge on the surface and jump down to the "acid fall" for Chaingun Cannon Ammo and Steroids. Return to the left ledge and jump across to the opposite ledge.

Follow the path right to a control panel. The button on the red column raises/lowers the water level, while the computer button opens the large underwater door. You will also find an RPG and a Large Medikit here.

SECRET 8: Between the video monitor and the red column, a hidden door leads to Shotgun Shells and Scuba Gear.

SECRET 9: Blow up the crack in the wall near here. A Trooper will drop, allowing you to kill him. This is the secret.

SECRET 10: Blow up another crack in the SECRET 9 area to find an Atomic Health.

SECRET 11: Blow up a third crack in the wall and enter the resulting space for a secret and a pathway back to the level's beginning.

Swim back into the water and proceed through the large door into Underwater Building 3. Find Pipebombs in a small indentation.

Swim into the building to find Shotgun Shells and two switches. The switch beside the black door opens it, creating a passage to the Underwater Building 2 area with an Octabrain and a Holoduke. The other switch opens large doors and creates a crack in the wall containing two Octabrains and Chaingun Cannon Ammo.

In the Gear Room, defeat the Octabrain. To pass the gears unharmed, wait for a stone-grey part, sneak in, and swim slowly. Behind the left gear, wait for a crevice to retrieve a Portable Medikit.

Proceed into the underwater basin. Swim to the right corner (facing away from the gears) to pass through the wall and find Body Armor and Scuba Gear.

Exit the water in the Waterfall Room and defeat the four Troopers. Find Shotgun Shells in a corner. Proceed down the waterfall.

SECRET 12: Slowly descend the waterfall. Around the second curve, shoot an RPG round at a crack in the wall. Enter the small room with a Large Medikit and a Teleport Pad. Use the pad to emerge in a secret room with Troopers and RPG rounds. Descend the waterfall to continue.

In The Water Room basin, find Shotgun Shells and a Large Medikit, and defeat two Octabrains. Emerge and go to the lowest ledge, defeating opposition. Find two Pipebombs on the lowest ledge.

Go up the ramp into the control room and defeat three Troopers. Find Chaingun Cannon ammo and a Large Medikit. Hit the switch.

Go up the waterfall with two doors. On the right platform, get Shotgun Shells. To cross, get on the black platform and shoot the button opened by the switch on the lower platform. A Large Medikit is where the button is.

Be quick: when the two big platforms meet, run onto the other one. To get an RPG and RPG Ammo, you must be fast. The platforms are underwater, and the first one conceals a fan you must break and enter WHILE the platforms are touching. This may take a few tries.

Go behind the wall and watch for the Octabrain in The Sewer. Enter the sewer and take the Atomic Health on the computer.