E2M9: Blood Cells (Dark Hell)

E2M9: Blood Cells is the ninth and secret map of Dark Hell. It was designed by Greytale.

Secrets

 * 1) Entering the room three after the start room causes a wall to lower, revealing a wall that must be shot to open up the next door. This wall counts as a secret. (sector 273)
 * 2) After getting the blue key, return to the start - there is a blue door to the east, leading to a room with a Cyberdemon, many items, and a switch allowing quick access back to the blue key room. (sector 126)
 * 3) After going through the series of lowering walls, before going through the door ahead, head right to reach a yellow key, an armor, six BFG9000s, two energy cell packs, three backpacks, and several monsters. There are two secrets here. (sector 283)
 * 4) See #3. (sector 286)
 * 5) There is a door to the west of the exit room leading to a room with several items and ammo. The two blood trenches either side of the stairs each count as secret. (sector 246)
 * 6) See #5. (sector 247)

Current records
The records for the map at the Doomed Speed Demos Archive are:

Player spawns
This level contains five spawn points:
 * 1) facing west. (thing 351)
 * 2) facing west. (thing 352)
 * 3) facing west. (thing 353)
 * 4) facing east. (thing 354)
 * 5) facing north. (thing 356)

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