Right at the entry, across from the flickering light, is a secret door. The wall is a bit green. Goodies.

Walk straight ahead from the initial teleporter. There is a lift at the back wall, ride it up. Go to the right around the 'cage' and squeeze tightly up to the red skull column - there is a trigger. When you touch it, the cage will drop. Behind it, secret room and trouble.

Cross the ring-shaped toxic moat and turn right as you reach the blue carpet. At the bottom of the room, to the left is a big room with a big... thing that will squash you if you walk under it, to the right some computer panels. You may just see and hear the panel close. Shoot the panel, and it opens - goodies!

Follow the blue carpet to the left, go through the door, ride the lift and get the blue key. Carry on through the two squashers, and end up at the zig-zag path with goodies on the other side. Put the hazmat suit on and cross back over the path. Drop down in the right-hand corner for goodie, then leg it out.

Back at the ring-shaped toxic moat, go around it to the LEFT, to cross a trigger. Orbit it half a turn. A hidden door has popped open. Goodies, and a surprise inside. I hope you like pink...

Get back on the blue carpet, take the right-hand path this time. Get through the blue and yellow door. Go left. A few steps past the staircase to the left, there are a couple of misaligned textures, and a hole in the floor. Drop down and tap the wall. Secret.

You got out again? Please curse and say "Well, here's another nice mess you've gotten me into!" Go down the stairs from #6. Inside the room,to the right, five doors. Enter the first. There is a waste pool, and a hole in the wall with some barrels. Shoot one of them, and jump into the hole; secret goodie inside.

Work your way through the five rooms. The last leads to a s-shaped tunnel, ending in goodies. Too bad it slams the door shut behind you. There is a greenish spot on the wall; hidden, but not secret door. Use it to get out again.

Back in the five-door room, go to the left side of the lava pit and jump overboard. Secret ledge. To get out again, hot-foot it over the lava to the ammo. Touch the back wall, a door opens.

At the exit, you walk on a elevated footpath over a blood pit. Charming. At the exit, turn around, you will see a goodie. The threshold of the exit door is the trigger. Activate it, another footpath rises.