Sick game, fights felt very cinematic, and I like the character and boss sprites.
The final boss, Cerlefes, was my favorite I think. It felt very much like an epic duel between 2 warriors. I like how his attack where he calls down lots of lightning requires either slowing down which makes your attack charge slower, or risk precisely weaving around them which keeps charging your attack at a faster rate and is satisfying to pull off. The other bosses I felt could mostly be dodged by moving in one direction, I think it's fine for the first boss to be like that since the player's still learning at that point, but generally I would've liked to see more attacks that require thoughtful movement.
Overall though it's quite a fun game, good job! :)