Thanks for the review! Just to note on some of your points.
1. Yea, I wanted to figure out how to only load 1 or 2 floors at a time or chunk load to reduce lag, but didn't have the time to figure it out.
2. The menu was the very last thing I made so there are definitely some aspects that I would've wanted to improve on.
3. The purple smoke was a teleporting mechanic that I was playing around with and forgot to remove :p. If you walk through it, it teleports you somewhere else. Unfortunately, it has a tendency to soft lock you from the rest of the maze, but can be fixed by regening the maze since it only appears on the first floor.
The monkey represents dead ends. Thanks!