Hell on Mars!!

Hell on Mars!! is a single-level PWAD for Doom that was designed by Martin Minkus and released in July 1994. It uses the music track "Hiding the Secrets" by Robert Prince.

Essentials
You start this map in a small hallway. Behind you is a cacodemon guarding the blue key. Kill it and pick up the blue key. Then, go through the wooden door and pick up the chaingun. Go back and enter the small hallway, where there are several explosive barrels. Next to it is the yellow door leading to the exit. In front of you, a platform will drop down. Go up and collect the items. Wait for the platform to go up again. To your left, to the north, is a wall that is actually a door. Inside is the red key.

Go through the red door and cross the courtyard. Open the next red door and go up the elevator. Follow the path until you reach the yellow key. Once you pick it up, multiple enemies will start teleporting in the square. It is not necessary to kill them all, but be aware that more than a hundred enemies can attack you if you wait too long.

Once you have the yellow key, you can go back the same way and go to the room with the explosive barrels. Cross the yellow door and continue. There is no other direction. You will reach a final room with a sky texture and once you cross it, you will have finished the map.

Secrets

 * 1) The northern wall of the first room has a secret door leading to a berserk, a medikit, and a demon. (sector 15)
 * 2) At the end of #1's passage is a secret door to the north leading to a soul sphere and a teleporter into the area that a lot of monsters warp in from. (sector 29)
 * 3) The south-west of the corner of the room accessed by the teleporter behind #2 has a secret door leading to a BFG9000. (sector 42)

Demo files
This WAD features two built-in demos by the author. Both require Doom v1.2 to view them. The demos are:

Current records
The records for the map at the Doom Speed Demo Archive are:

The (absence of) data was last verified in its entirety on November 30, 2021.

Player spawns
This level contains nine spawn points:
 * 1) facing north-east. (thing 226)
 * 2) facing west. (thing 227)
 * 3) facing north. (thing 228)
 * 4) facing south-east. (thing 229)
 * 5) facing north-west. (thing 230)
 * 6) facing north-west. (thing 231)
 * 7) facing south. (thing 233)
 * 8) facing south. (thing 234)
 * 9) facing east. (thing 235)

Things
This level contains the following numbers of things per skill level: