I like the cover.
This is dense with content, so I understand the challenge you're facing, but the font size -- since this is supposed to be an A5 product -- is pretty small.
The alliterative room titles are a lot of fun.
The aesthetics of this adventure evoke the feeling of old TSR modules while being better structured and designed -- a nice trick to combine both of those and something designers usually have to choose between.
I also admire the color-coding of rooms with their maps. It's a simple thing, but not one I see very often.
Once the jam is over, I'd consider expanding and fleshing this out a bit more (and giving the text a bit more room to breathe).
This is really polished and atmospheric. Excellent work!