The mood set and the visuals are nice, and there's some cool technical stuff, but god, the mythos set up by this is just so silly that when the vibes aren't unsettling you, it just kinda feels corny.

As a map on it's own, it also makes some questionable design choices. The choice to be cryptic is fine and obviously a part of the vibe it's going for, but a lot of it feels too cryptic to solve the good ending on it's own, while simultaneously losing a lot of the appeal with a guide.
The enemy spam also gets really bad near the end of the map. Like, the gas station sequence is fucking atrocious. Who the hell looked at nuts.wad and said "But what if it was dark and you couldn't see?"