E2M4: Air Filtration Plant (Solar Struggle)

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Solar Struggle maps
Titan Terror

M1 M2 M3 M4 M5 M6 M7 M8 M9

Ceres Carnage
Moon Madness

M1 M2 M3 M4 M5 M6 M7 M8 M9

Venusian Violence

M1 M2 M3 M4 M5 M6 M7 M8 M9

This level occupies the map slot E2M4. For other maps which occupy this slot, see Category:E2M4.
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E2M4: Air Filtration Plant is the fourth map in episode Ceres Carnage of Solar Struggle. It was designed by Weird Sandwich and uses the music track "Clandestine" by Chris Leeson (Psyrus).


Map of Air Filtration Plant
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.


Other points of interest[edit]


  1. After dropping into the metallic air vent maze in the center of the map from the room locked behind red door, turn left and press the wall with an electricity symbol on it. This will give you access to a supercharge. (sector 170)
  2. In the room with four silver cylinders going up and down, use the northwestern one to get on the ledge along the green wall. Press on the differently colored segment to access a blue armor. (sector 223)
  3. After using the blue key to drain water in the eastern cystern and jumping down, turn left and travel through the vent until you see a wall segment with pipes. Use it to gain access to a plasma gun. (sector 297)


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
NM speed
UV max
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

The (absence of) data was last verified in its entirety on December 11, 2022.


Map data[edit]

Things 210
Vertices 2865*
Linedefs 3011
Sidedefs 4739
Sectors 630
* The vertex count without the effect of node building is 2369.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]