This was really fun! Very polished, and does the retro aesthetic properly. I liked the variation in both aesthetics and mechanics as I progressed up the tower (though, I think the bounce pad section maybe went on a little long - I might have preferred a few more block puzzle rooms instead of ~10 bounce pad ones). Maybe that sense of progression could be improved by giving the new areas new music tracks, as well, though of course given it’s a jam game it’s understandable there’s only one.
The boss was a fun way to wrap it up; though, I think it might be better if there were stronger feedback when you got hit. Right now, it just fades to black without ceremony, which maybe feels a little awkward.
Nice work on this! Had a good time playing through it.