E1M4: UAC Waste and Storage Facility (ZPack)

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ZPack maps
The Remains of UAC
Descent to Darkness

M1 M2 M3 M4 M5 M6 M7 M8 M9 M0


M1 M2 M3 M4 M5 M5 M6 M7 M8 M9 M0

This level occupies the map slot E1M4. For other maps which occupy this slot, see Category:E1M4.
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E1M4: UAC Waste and Storage Facility (M_SOLOUWSF.WAD) is the fourth map in episode The Remains of UAC of ZPack. It was designed by Hnsolo77 and uses the music track "Between Levels" from Doom II, composed by Robert Prince. The par time defined in MAPINFO is 11:00.


Map of UAC Waste and Storage Facility
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. Reach the courtyard outside of the big cargo room and flip the switch just south of where the ship is. Now return to the starting hallway and press on the wall with blue triangles, which is just north of the moving wall. Head all the way to the end to pick up a rocket launcher. (sector 24)
  2. At the hall just outside of the blue keycard room, you can enter the sludge to the south and go all the way until it dead ends. At this point, if you crouch and head north, you can reach a megaarmor, shotgun shells, and ammo clips. (sector 82)
  3. In the blue keycard room, there is a radiation suit hidden behind the sewage in the southeast corner. (sector 124)
  4. Exit the crate room into the courtyard and head to the southern side. There are some crates you can jump on which will help with getting back inside. Once you do so, head left and enter the open crate to get ammo and a backpack. (sector 390)
  5. On the ship, get onto the edge of the ship at the left side, then jump atop the crates as you go right towards the energy cell pack. (sector 1475)


If you enter the water in the courtyard and head to the southern side, there's a sludgefall here. If you somehow make it into the sludge (most likely via cheating), you will see an image and be greeted by the message "Hnsolo77 is your God now! Face my Pet Demon!" This will cause a cyberdemon to spawn in the hallway just before the red key room.

To reach the secret exit, you need to enter the water in the courtyard near the ship's tail end. There is a tunnel just south of the tail end here, which will take you to the secret level.


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 21, 2021.


Player spawns[edit]

This level contains eight spawn points:

  1. facing north-east. (thing 309)
  2. facing south-west. (thing 310)
  3. facing north-west. (thing 311)
  4. facing south-east. (thing 312)
  5. facing north. (thing 313)
  6. facing north-east. (thing 314)
  7. facing south. (thing 315)
  8. facing east. (thing 316)


Map data[edit]

Things 1250
Vertices 4430*
Linedefs 5841
Sidedefs 10412
Sectors 1549
* The vertex count without the effect of node building is 4430.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]