I love and hate this game.
Just off the bat the Art and the Music are amazing, even after playing as long as I did, I still did not get tired of listening to the music. The art is incredibly cute, all of the bosses have so much character to them and I loved seeing the little poses before or after attacks.
I think my main problem with the game is that the controls never really clicked with me very much. I started originally by using the dynamic control, however I switched over to the original controls with j and k instead because being able to start at the top of the arc felt very important to me. Little things would happen very consistently that were incredibly frustrating that made me feel like I was fighting the controls more than the bosses. Little things like, not realizing that the parry is for the entire upwards duration and not just the start, the fact that I was unable to exit the spin attack so if a boss attack started I would be force to just tank it, or the fact that I had to press s again after getting a successful hit in order to fly again in order to spin attack again.
I liked the bosses, they were very charming. I felt that the dog boss was the most difficult, it felt impossible to actually get a parry off during the dig attack. Similarly during stage 2 of the snake boss it was frustrating to wait for the green bone to actually be parry-able usually due to another bone just sitting slightly underneath it. But stages 1 and 3 were fine, they felt quite easy after learning the pattern.
The amount of work put into this is super impressive, it really feels like a cohesive whole.
Good luck in the jam I hope this game does well