Nice precision platformer, there were some really great segment sin there. I think how you chose to implement the theme is pretty interesting, and was done very effectively. My obvious concern with a stop n swap like mechanic for scale would be that one would lose momentum, however having the focus on size shifting to how you navigate the spaces immediately at hand kept things remarkably engaging . Also well done making death easy while not making it a momentum killer. Really solid game, my only feedback is that I think visually the game might be a bit too dark. I at times had trouble seeing the spiky things.
Great work!