This is cool! The randomly generating levels is impressive, and although I didn't download it to check, getting a level editor working is also super cool!
I couldn't find a way to deal with small rooms with two skeletons, it always seemed like I had to take damage whenever that generated, which sucks because I also couldn't find a way to heal. Maybe that's just a skill issue.
The giant rooms after floors made me think a boss fight was about to happen, but then nothing spawned.
Regardless, you've got some nice presentation here with a spooky mysterious song, and old school crunchy sounds. I like this one a lot! Hope you keep adding to this!