Beautiful looking game, art and music create a nice atmosphere. Enjoyed the music stings on jump and dash too but it was a little too hard for me to complete. I gave my feathers to a drifter (didn't realise he would take all) and got stuck in the next room since I just had one jump. Anytime I died I would need to do a puzzle to get a second feather to even begin the make the tough jumps around the thorns so I eventually gave up and got used to my life in the tower.
I think there were a few hitbox issues. As an example in that room after the drifter, the platform at the bottom is visually more left of the collider.