The phantasmi-shift mechanic is absolutely solid. And it shone through with your level designing.
I loved the aesthetic (color palette, music, art style. All of it.).
I don't see too many works with pumpkin based protagonists (maybe I'm not looking hard enough). Was reminded of Billy and Mandy's, Harum Scarum game. If you've heard of that (because pumpkins).
I don't play many platformers. And this seemed to be one of the more advanced kinds. From what I know it reminded me of the rage platformers or geometry dash (that mist corridor part).
It was both funny and emotionally painful to become a ghost, then immediately smash into a cloud wall. But since I assumed you were going for a semi-rage platformer, my frustration was part of the experience. I NEEDED to beat those bats.
Your game forced me to rise above my limits. And I thank you.
I'm proud to announce,
I AM the squash master.