Judging from the comments I think I ran into a bit of a bug. I could not die or progress past the levelling up level.
My biggest gripe with the game up until that point is that the game plays rather slow. I would have preffered fast more snappy movement. I also missed any visual indication as to how much health I had.
Perhaps also due to the bug I ran into is that I didnt really see how the game fits with the theme. Overall well done on finishing a game though! In particular the music is done quite well for the limited time.