I like the premise. Cool eye on the cover. The rooms are varied and interesting. I think you need to add a section for the GM on pc goals and background on how they can escape.
Good job.
Thank you! Totally agree that I'd like to have a bigger section to provide 2-3 different set-ups for the PCs, who I initially imagined being all squires of the group already present.
I did try to use stars to mark the two methods of escape: the Moon Mask and drawing The Moon from the Deck of Fates (aka Deck of Many Things). Or whatever other solution might arise out of the deck.