I like that you made the enemies and spikes actually damaging at first and then changed them later. I followed the instructions but then went back and tested it.
The charge bar for the dash merged into the background too much. I at first didn't see it at all and assumed the charge was random, then got to the actual level and was moving around so much I thought it was bugged haha.
The enemies and spikes smashing to pieces really made the game fun