Absolutely love this. It’s clear and concise, but the prose is evocative (I especially like the description of the denizens of area 5). The new creatures are cool and deadly in ways that are sure to terrify the players. The ONLY critique that I have is that area 5 mentions a pathway to access “area 8” which is not included in this adventure. I completely understand WHY it isn’t, but I’ll admit that it took me going back to the map a couple of times before I realized that area 8 is a part of the larger dungeon complex in which this particular section resides, so a parenthetical note there would have helped me a lot.
Overall, 5/5. I’m going to run it.