It's nice to see those old school type dungeon game again. The ambient is good and it respect the thematic of the jam. I think the level design as it's flaw, going back and forth to get the level, is not a very much interesting mechanics for the player.. I got to the Lava level, but at this point, I was a bit bored, and stop.
Maybe less level (as those are pretty empty), but more puzzles to solve would have been better to stimulate the player?
Great graphic tho, and congrats to build this game in such little time !