Controls really well, difficulty ramps up well, and theme is on-point. It really does feel at first like you're moving through a fun progression system with the cosmetics etc you pick up, and the Crow's change is well-executed. 

I saw your post on the discord so I wanted to try your platformer out. I've only gotten to lvl 18 so far but man, after 16 it does get pretty challenging! I absolutely love the animation, and for as far as I was able to get I enjoyed the ambiance and subtle story telling. I appreciated that the crow was there to encourage me as a player the entire way and the nice touch of a crow bringing Cathy some little trinkets as that is normal crow behavior.  A suggestion- on lvl 16, even touching the side of one of the spikes causes a reset and I found that very frustrating since I wasn't touching the spiky part, maybe adjusting this in the future could lead to less frustration on the player's end for this level since I spent longer than I would have liked on 16. Great job!