MAP15: Karmacoma (Memento Mori)

MAP15: Karmacoma is the fifteenth level of Memento Mori. It was designed by Florian Helmberger and uses the music track "Triangle of Fear" by Mark Klem.

The level is named after a song by the British trip hop band Massive Attack from their 1994 album Protection.

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.

Secrets

 * 1) In the central building, the eastern room from which monsters are released has a candle sitting in front of the southern wall.  Open the portion of wall the candle is in front of to find a berserk pack.  (sector 47)
 * 2) A portion of wall in the southeast corner of the building southeast of the map has a candle sitting in front of it.  Open this portion of wall to find a stairway leading to a room with a switch and two teleporters. (sector 206)  Both teleporters lead to the inner side of the eastern gate at the north of the map.
 * 3) Flip the switch in secret #2 and enter the western teleporter to be taken to the southern edge of the gate.  Jump to the pool with the soul sphere in it to register this secret. (sector 60)
 * 4) In the northeast building, take the northeast elevator.  Press on any of the inner walls to reveal a horde of enemies and a combat armor. (sector 112)
 * 5) In the northeast building, take the southeast elevator.  A portion of the wall at the center of the maze is misaligned; open this portion of wall to find a secret room with a berserk pack. (sector 108)
 * 6) After teleporting from the northeast building, a portion of wall to the east of your landing spot has pipes on it.  Open this wall to find a switch that triggers crushers in the northwest building, killing the chaingunners who would normally attack you at that location.  This actually consists of two sectors, including the door sector, that are both marked as secret.  (sector 437)
 * 7) See secret #6. (sector 438)
 * 8) The inner sides of the walls to either side of the crate storage door in the west of the map are marked as secret. (sector 281) However, they are both impossible to reach unless you use the noclip cheat code, or jump on to them in a source port that allows jumping.
 * 9) See secret #8.  (sector 282)
 * 10) After obtaining the red keycard, a small walkway will rise beside the western windows of the warehouse.  Reenter the warehouse, lower the crate with the invulnerability on it by pressing on it from the east side (if you haven't acquired it already,) exit the windows, and stand facing the center of the building's western side.  Fire your rocket launcher at the wall and run backwards simultaneously; the momentum created by this will propel you onto a small platform with a megasphere and teleporter to the west. (sector 271) The teleporter leads to the secret level, Technology Base.  This exit is reminiscent of the famous rocket jump exit in Doom's E3M6: Mt. Erebus.

Bugs
In single player mode, two additional red light switches should appear in the green nukage building in the southeast, down in the pools on the north wall, one on each side. These switches lower the activated bridge just like the big switch between the teleports does. In the east pool, there are three other switches, of which the left one activates the bridge, but it raises too fast to get on top. You need the fourth switch on the right to lower the bridge again. Now for the bug: You have to set foot on the shotgun floor patch in the middle of the starting room. Not doing so (i.e. walking around the shotgun) means the above mentioned two switches do not appear and you will be locked in the pool later.

Due to secrets being impossible to reach, you can only obtain 80% Secrets on this level.

The southern linedef of the red key platform (linedef 1979) has a different action than the rest. While the others have type 22 (walkover once, floor raise to next higher floor and change floor texture,) the southern side has type 30 (walkover once, raise floor by shortest lower texture.) If you trigger this after raising the western walkway normally (see secret #10,) it will rise further and completely block the windows, preventing you from reaching the secret exit.

Routes and tricks
When doing speedruns of this level, the most optimal elevator to lower in the northwest elevator and teleporter building is the southwest one, activated by the teleporter platform's western switch. From the southwest of the building, you can strafejump into the western portion of the yellow keycard building, circumventing the need to enter the northeast building.

The secret exit on this level can also be accessed by strafejumping to the platform from either window of the warehouse, without needing to activate the walkway first.

Current records
The Compet-N records for the map are:

The data was last verified in its entirety on March 23, 2014.

Map data
* The vertex count without the effect of node building is 2405.