MAP04: Pit of Sludge (Claustrophobia 1024)


Claustrophobia 1024 maps 01-11

(01 - 11)
12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
Secret maps: 31 32 33 34

This level occupies the map slot MAP04. For other maps which occupy this slot, see Category:MAP04.

MAP04: Pit of Sludge is the fourth map of Claustrophobia 1024. It was designed by Stuart Rynn (Forty-Two) (who also wrote the music track "Edge" for this map) and Steve Muller (Kyka).


Map of Pit of Sludge
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.


Step forward to collect a shotgun under your feet, then follow the path east past some zombiemen to find a chaingun being overlooked by more zombiemen along with shotgun guys and imps. Climb up the angled steps and walk north until you drop down to a ledge with a Hell knight, then head west until you go down a couple of striped steps into a tunnel - there are multiple imps, demons and knights waiting inside it, and two cacodemons will be released outside. Climb up the steps at the end of the tunnel to a narrow ledge and walk along it, noting the two metal spikes that protrude from the ground - you can run east off either of these spikes to enter the central structure, but you will have to clear the imps, zombies and knight (plus demons on Ultra-Violence and Nightmare skill levels) that have teleported there. Inside the structure, go to its north end of the structure to find a chain switch and pull it to open a second switch at the south end, which will lower the exit teleporter in the north-east corner of the map. You can get there by running north off the structure to the ledge below, then east to the exit.

Other points of interest[edit]

From the chaingun, continue north to find five stacks of shotgun shells and a super shotgun.


  1. Go down the steps at the start to a couple of stimpacks, then open the west wall - which does not have a metal strip running through it - to find an imp and a berserk pack. (sector 122)
  2. When you reach the narrow ledge with the two metal spikes, look east at the central structure to see a wooden panel that does not have skulls on it. Shoot that panel, along with the gargoyle switch that is revealed behind it, to open a supercharge to the north. (sector 222)


Demo files[edit]

Areas / screenshots[edit]


Routes and tricks[edit]

Current records[edit]

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

Run Time Player Date File Notes
UV speed 0:23.34 Boris Klimeš (dew) 2009-06-24
NM speed
UV max 1:18.49 Vladimir Monakhov (skepticist) 2009-06-19
NM 100S
UV -fast
UV -respawn
UV Tyson 2:39.60 j4rio 2019-07-06
UV pacifist 0:26.60 Graim 2009-06-30

The data was last verified in its entirety on December 21, 2021.


Map data[edit]

Things 128
Vertices 1287*
Linedefs 1284
Sidedefs 2113
Sectors 225
* The vertex count without the effect of node building is 995.


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

Technical information[edit]

Inspiration and development[edit]


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