E3M7: The Sentinel (Back to Hell)

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Back to Hell maps
This level occupies the map slot E3M7. For other maps which occupy this slot, see Category:E3M7.
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E3M7: The Sentinel is the seventh map of Back to Hell. It was designed by David Seager.


Map of The Sentinel
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. East of the start is a room with a pit in the centre. There is a secret door in the south of this room (marked with a red texture) leading to a chaingun and two boxes of bullets. (sector 507)
  2. The switch that opens up the doors west of the start also raises ceilings near the start revealing alcoves with barons of Hell (not on easy skill. Going through either of the doors to the west briefly lowers these alcoves, each of which counts as secret, revealing a rocket launcher and a backpack. (sector 36)
  3. See #2. (sector 37)
  4. The room east of the red key room has an alcove to the south with a red floor. The back wall of this alcove is fake, leading to two boxes of shotgun shells, two energy cell packs, and a soul sphere. (sector 505)
  5. The eastern part of the maze in the west of the level has a secret lift (marked with a different texture) leading to a room with a stimpack. (sector 419)
  6. From #5 it is possible to head east then north through to a maze which ultimately leads to a room with four barons of Hell, a Spiderdemon (multiplayer only), some ammo, a rocket launcher, a plasma rifle, a soul sphere, and two invulnerabilities. There are three secrets here. (sector 478)
  7. See #6. (sector 480)
  8. See #6. (sector 508)


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 8, 2021.


Player spawns[edit]

This level contains four spawn points:

  1. facing west. (thing 325)
  2. facing north. (thing 326)
  3. facing east. (thing 327)
  4. facing east. (thing 328)


Map data[edit]

Things 376
Vertices 2561*
Linedefs 2735
Sidedefs 3716
Sectors 509
* The vertex count without the effect of node building is 2200.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]