MAP22: Locus Perditus (Plutonia 2)


Plutonia 2 maps 21-30

01 02 03 04 05 06 07 08 09 10 11
12 13 14 15 16 17 18 19 20
(21 - 30)
Secret maps: 31 32 33

This level occupies the map slot MAP22. For other maps which occupy this slot, see Category:MAP22.

MAP22: Locus Perditus is the twenty-second map of Plutonia 2. It was designed by Erik Alm and Adolf Vojta (Gusta), and uses the music track "Deep into the Code" by Robert Prince. The par time defined in MAPINFO is 2:30.


Map of Locus Perditus
Letters in italics refer to marked spots on the map. Sector, thing, and linedef numbers in boldface are secrets which count toward the end-of-level tally.


You will start on top of a berserk pack, so use it to kill the revenant and then enter the teleporter. Use the switch straight ahead and you will lower into the first big area. You will fight with a ton of monsters in this large area, and you need to cross to the east. To do so you need the blue key and the red key. Head inside the main structure and walk into the lava to find the blue key, but look out for the many monsters who guard it (you can use barrels to your advantage here). For the red key, go along the walkways outside of the main structure, and then into the dark hallway. The hall forks to the west where you can retrieve the key. When you have both keys, return to where you entered the area and there should be two doors, red and blue, that will raise the bridges to the other side.

As the bridges are rising, some mancubi will teleport on the other side, so kill them before proceeding. Grab the blur artifact and tear your way to the eastern side of the map. You need the yellow key here, but first you must press a few switches. The walkways that follow have switches on the north and south sides, which open up hallways behind them. You need to press both for the halls to be fully open. Of great help in this area is an invulnerability right next to the key pedestal (if you are not playing on Ultra-Violence or higher) and a megasphere when you enter. Now press the switches at the end of this hall to get the yellow key platform to lower. Upon grabbing the key, the two yellow doors behind it open revealing cyberdemons, and other monsters teleport in. Dispose of them, and open the exit doors, taking the teleporter to the exit.

Other points of interest[edit]

To get a BFG9000, head into the main structure on the west side of the map and take either teleporter inside. You will teleport into a square where a spider mastermind is. Behind him is another teleporter, which takes you on top of a BFG9000, possibly telefragging a chaingunner if he was not killed already. Trying to get off the teleporter takes you back to the entrance switch.


  1. On the way to getting the red key down the stairs, turn right into the lava pool. Then turn right again, and behind the column with the demon wallpaper on it, is a hole in the building. Go into it for a berserk pack and a blue armor. (sector 233)


Demo files[edit]

Areas / screenshots[edit]


Routes and tricks[edit]

This is possible to get to the eastern portion of the level without collecting the red key. When the eastern half of the bridge will be rising when you activate switch in the blue door this would be enough to drop on it to get to the eastern part of the level.

Current records[edit]

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

Run Time Player Date File Notes
UV speed 0:33.49 Red-XIII 2015-11-28 Cross-listed from Pacifist
NM speed
UV max 7:36.54 Phoenix 2021-10-23
NM 100S 1:09.06 Red-XIII 2020-07-29
UV -fast 11:43.77 blob1024 2013-12-29
UV -respawn
UV Tyson
UV pacifist 0:33.49 Red-XIII 2015-11-28
NoMo 0:49.94 Doomdaniel95 2013-07-11

The data was last verified in its entirety on January 15, 2023.


Map of MAP22's deathmatch arena

This is one of two maps in Plutonia 2 that has a separate arena for deathmatch. The other map is MAP33: Chocolate.

Player spawns[edit]

This arena contains four spawn points:

  1. facing north. (thing 347)
  2. facing west. (thing 348)
  3. facing south. (thing 349)
  4. facing north-west. (thing 587)


The following things (per skill level) are placed in the arena:

Weapons 1-2 3 4-5
Super shotgun 4
Rocket launcher 2
Plasma gun 2
Ammunition 1-2 3 4-5
Box of shotgun shells 18
Health & Armor 1-2 3 4-5
Medikit 9
Miscellaneous 1-2 3 4-5
Deathmatch start 4


Map data[edit]

Things 711
Vertices 3859*
Linedefs 3734
Sidedefs 5567
Sectors 692
* The vertex count without the effect of node building is 3037.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]