It was a bit slow, and dying took you back to the start. I wanted to experiment with the new enemy in the third level, but when I died, I had to start over =(
The game was very polished tho, with all of the particles, the map and the shading. Good job with all of that! If you were to maybe add checkpoints at the start of each level, this game would be so much more fun!
EDIT: Oh, that breaks your connection with the theme... Well tbh, I don't think a single life suits this sort of game, so consider stripping this in any post jam updates.