I really want to love this game, the art is spectacular and the feel of play is solid. I stuck with it for like 5 tries before I had to give up for two main reasons.
1. At the beginning of the first fight you have to get underneath the boss to screw in a blue bolt. However, when you are under the boss he will hit you with spike attacks that are basically completely undodgeable. There are spikes to the left and right so you can't get out of the way, the only way I could see that it was possible to avoid the attack was to fully jump out and fly away, which isn't super fun to do since you lose the chance to continue screwing in the bolt.
2. When you die you start over at the beginning of the tutorial instead of right in front of the boss. That extra wait time can really kill motivation to play, as it did for me.
I really think this game could be awesome with just a little bit more balancing and some quality of life improvements though! The bones are there, it just needs polish.