MAP01: Subterra (Master Levels)

Subterra is a map that is part of the Master Levels for Doom II. It was designed by Christen Klie, and is contained in the file SUBTERRA.WAD. In the Playstation Doom port it occupies the twelfth slot and uses the music track "The Broken Ones".

Walkthrough

 * Letters in italics refer to marked spots on the map. Sector numbers in boldface are secrets which count toward the end-of-level tally.

Red key
Rise and open either door you can see. Kill the hell knight and go down. Using the lift enter the second storey (to the north). The sides of teleporter lead to the corresponding sides at the starting area. You need to enter the teleporter from the either east, south-east or north-east. Grab the red key at the tops in the starting area.

Blue key
Return to the lift and use it to get to the bottom level. Open the door at the south. In the blood room get to the sothern side and open the door. Walk around in the cage and press the switch at the end. Return to the lift place but open the red door indicated by bright red rock on both ceiling and floor. The rock pedestal with blue key is lowered now. Go down, grab the key. Return to the lift and enter the second storey room where there is another red key door.

Yellow key
Enter the southern room with several blocks with skull depicted. Jump on them until you enter the teleporter. In the crossroad enter either western or northern (faster) door. On the grounds go to the south-west of this area. Press the switch that lowers the wooden bar with yellow key. Get to the tops either by lowering the wooden lift (a much faster way) or by using the teleport at the south-east. Once at the tops you will see two cages with monsters. Go to the eastern end, walk around the second cage and grab the yellow key.

Exit
Drop down to the grounds and enter the western door indicated by yellow rock both on the floor and ceiling. Open the blue door at the south. The alcove to your right will open along the blue door. It contains a button to turn on the lights in the southern room. Enter the souther room. Carefully walk on the steps until you reach the button, press it. Get back to the room where there is yellow key. Walk on the slime that first was lethal to stay on. Flip the switch at the end of slime pool.

Secrets

 * 1) In the south-west nukage to get the Soulsphere you have to enter the teleport pad either from the top or from the right. (sector 178)

Current records
The records for the original map on the Doomed Speed Demos Archive are:

Differences between PC and PlayStation versions

 * 1) The exit sign was added above the exit switch.
 * 2) In the starting area two doors are opened automatically when the player approaches. There are more two doors leading right to the lift that were removed in the PlayStation version. This allows players to grab the health and armor bonuses while playing DeathMatch.