I love the game its visuals and music are very nice! the first 2 bosses are very good and creative but sadly the final boss bugged out for me (the dialogue didn't activate) overall very good!
I do have some suggestions though
-The pillar boss became immensely easier when I realized dash spamming gave you infinite I-frames, making it impossible for it to hit me
-I would add a better indicator for taking damage, as I couldn't hear or see any indication of my health (if there was one it blended in with the sounds of the bosses attacks) and there isn't much room to check in the fast-paced fights, making me take risks I may not have otherwise
-I would add a few more smaller enemy types in future updates (if you plan to) just to make the game feel overall smoother and more fast-paced, this was obviously made under a great time constraint though so even having smaller enemies in-between the bosses was a nice touch!
All in all a great game and I hope to see more works from you in the future!