Yo it's MEEE, anyway loving the idea of sacrificing one mechanic with another and vice versa, when your shrinking the "poof" effects pops out constantly which was interesting, the difficulty curve was fairly balance just you really need to relay on your intuition,
suggestion:
1) the spikes can only be broken when crush from top and you die despite being over 50 size from the side which was frustrating but necessary I guess so why not make it so that you can't be kill from the side so it's just an obstacle from the side
2) the vision was important so why not make the camera field of vision BIG so it can be utilize more and with a bigger map especially the maze which the vision will come super handy and you will have to get stuck due to the small tunnel so your stationary and still have to roam through the dark maze
3) how about changing other state like you trade your z size for your y size so you can either be as narrow as a bamboo or wide as a bridge other states like movement speed for gravity or have the angle of the camera flip but can see through and pass through secret passages
good job :D(that big and old goofy face of blackthorn XD)