E1M4: Sludge Factory (No Sleep for the Dead)

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No Sleep for the Dead maps

This level occupies the map slot E1M4. For other maps which occupy this slot, see Category:E1M4.

E1M4: Sludge Factory is the fourth map of No Sleep for the Dead. It was designed by Jan Van der Veken and uses the music track " ".

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Map of Sludge Factory
Letters in italics refer to marked spots on the map. Sector numbers in boldface are secrets which count toward the end-of-level tally.


Other points of interest[edit]


  1. A dead marine is in the first nukage pit at the start. Go past it to find a shotgun. (sector 0)
  2. Open the door at the end of the walkway at the start, then go left and up the steps you see. Next to the dead marine and shotgun shells, open the wall here to get armor bonuses and a medikit. (sector 199)
  3. Go towards the T-shaped blue-floored room at the north end of the map. Backtrack and there will be monsters pouring out from another blue-floored section. Flipping the switch in this section allows access to the rocket launcher beyond the window. To get to it, run west from the switch back to the T-shaped room and through the open passage ahead. The next door leads to the rocket launcher. (sector 151)
  4. Drop from the rocket launcher accessible from Secret #3 to the nukage, then go east and up to find rockets, medikits, a computer area map, a box of ammo, and a chaingun. (sector 229)
  5. Press the switch near the T-shaped blue-floored room to open the wall leading to the northwest room where the red key is. In this area, open the gray wall in the southwest corner for some health bonuses. (sector 92)
  6. Next to the big lift at the east end of the map is a small passage leading to a blur artifact. (sector 270)
  7. Next to the chaingun at the east side of the map, hit the switch lower a wall across the nukage containing a soul sphere. To reach it, head back west, then south (make sure you have a radiation suit), and follow the passage southeast of the red door until you see it in the next big room. (sector 187)
  8. Going east from Secret #7, continue along the nukage and around the exit to find a box of rockets, a box of ammo, and a box of shotgun shells. (sector 242)


Demo files[edit]

Areas / screenshots[edit]


Routes and tricks[edit]

Current records[edit]

The Compet-n records for the map are:

Style Time Player Date File Notes
UV speed **
NM speed **
UV max **
NM100S **
UV -fast **
UV -respawn **
UV Tyson **
UV pacifist **

Miscellaneous demos[edit]

Style Time Player Date File Notes


Map data[edit]

Things 271
Vertices 1289*
Linedefs 1424
Sidedefs 1829
Sectors 274
* The vertex count without the effect of node building is 1142.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]