A very good little dungeon that can be included anywhere that fits the theme. !it has everything a good dungeon need (maybe it lacks of loops in the design) and seems pretty runnable "off the book".
I have two points that could be improved:
- It is system agnostic but uses part of certains system (a DC 14 check looks like SRD 5e system) and yet the statblocks doesn't fit in this system. If I have to run the module, I would use other statblocks from my game. To reach agnosticity it would be better to use terms such as "a simple / medium / hard / very hard check" and no statblocks at all (only maybe an equivalent in a system you know. In SRD 5e the spy or the commoner for the prisonners for example.
- The only emphasis put on certains words are in bold and it depicts a lot of things (monsters, parts of monsters, rooms, contraptions etc.). I really understood that a funerary harness was not a monster only at the end oof the document