Hey, I really enjoyed playing your game! It was fluid, fun, and engaging! I enjoyed the mechanics, the art style is really clean, and I think I found the secret boss on my first playthrough, albeit accidentally XD. I loved the boss designs! I personally would have loved to see the bosses have more personal names or connections to the knight to tie them further into the fractured past theme.
I played on controller, and the controls seemed to be shifted by one button: B was acting as A, A was acting as X, X as Y, and Y as B. I don't know if that's a bug or some issue with my controller.
Regardless, I was thoroughly satisfied after beating the game! Cheers!