I'll start by saying - platformers are my mortal enemy, this game kicked my butt and made me angry, but I felt like a pro once I (finally) beat it!!
Your graphics are stunning! The color palette is gorgeous and the pixel art itself was serene and really captured the essence of the game. The game included lots of purples/blues though, so a colorblind mode might be a good addition! I also felt that the spirit sprite was too "slippery". I had a really terrible time adjusting to not sliding into walls of death XD
With the spirit walking mechanic, I almost felt like I was controlling 2 characters. Providing a unique ability for your corporeal form, in addition to your spirit form, could lead to lots of interesting puzzles to platform and solve
Thank you for your submission to the HF 2023 Game Jam!