Glad you enjoyed it! My preferred order for upgrade removal ended up being wall jump, dash, then charge shot, but I think without the final boss fights being implemented charge shot is pretty reasonable to give up earlier. I definitely need to look up how to implement ladders in a better way, I think my solution was pretty hacky and it shows.
I tried to make health drops from enemies pretty generous, it's just that I didn't get to fill up some of the later screens with enemies to drop the health, so the hazard damage starts to pile up (at least that's my experience). I do definitely wish I had had time to go through and tweak some of the difficulty / room layouts, but thus is the nature of game jams.
Thanks for playing!