This game is beautiful in its art and atmosphere (some haunting music would have elevated it even more). I found it to be quite difficult, but from the other comments, it seems that was the intention, so no harm there.
I would have liked some recourse for the things that chase after and fly into you. Once they get to you, it's very hard to not take damage from them multiple times. Some kind of recoil for the player that pushes them a bit away might have helped to make that feel a bit more fair.