Really appealing and printer-friendly art direction! I do feel the text is a bit condensed to its detriment, though, and some columns are lack spacing between one another. The map legend is also pretty squished in there.
That aside, you've written some excellent body horror here! The dungeon essentially tells the story the company and their product - I think a lot of dungeons tend to miss that. The more you explore, the more you learn, and the worse things get. I also really, really enjoy the timeline of events, they're explosive without being railroady or too narrow. I get a good sense of the narrative arc a one-shot might take by reading them. Well considered and great work overall!