I made it to 64 rooms!
I think other people have already mentioned most of the things I wanted to say, so I'll just add that I had a great time. Getting about half an hour of fun out of a jam game is impressive. After that, the gameplay starts to feel a bit repetitive, but for a game jam entry, it's really well done.
The only odd issue I ran into was that sometimes, when I was pressed against a wall, I couldn't jump. It might have something to do with wall collision or friction.
Other than that, everything was awesome. Great job!