Z1M8: Phobos Anomaly (Knee-Deep in ZDoom)

Z1M8: Phobos Anomaly is the eighth and final level of Knee-Deep in ZDoom, revisiting the original level with some new twists. The level ends with a showdown between the marine and Magmantis, the Deimos Guardian, preceded by three mini-boss fights with Barons of Hell and Bruiser Demons.

Walkthrough

 * Letters in italics refer to marked spots on the map. Sector numbers in boldface are secrets which count towards the end-of-level tally.

Secrets

 * 1) Sector 588: After going through the blue door, turn left. On the south wall of this corridor, there is a very well hidden switch. Pressing it opens an adjacent compartment, containing a rocket launcher, and some rifle cartridges.
 * 2) Sector 960: In the room after the cacodemon ambush corridor, jump down into the slime river. To the immediate north, open the "POISON" sign on the west wall. Rifle cartridges, a chaingun and a blue armor can be found inside.
 * 3) Sector 2232: After opening through the triple-locked door, open the wall on the immediate right. The soulsphere secret has been moved here. The original was replaced with an ambush by a single lost soul.

Speedrunning
The records for this map at the Doomed Speed Demos Archive are: Last updated on March 17, 2013.

Things
Initially, the level contains the following number of things on each skill level. This does not account for Thing_Spawn. Custom things are italicised.

Primary mapping

 * Daniel Gimmer (Tormentor667)
 * Björn Ostmann (Vader)

Tertiary mapping

 * Nick Baker (NiGHTMARE)
 * Michael Niggel (Risen)
 * Pawel Zarczynski (NMN)
 * Elric Sullivan (Darkhaven)
 * Andrew Fernie (Ninja_of_Doom)
 * Lexus Alyus