Great metroidvania! Simple yet appealing graphics and good animations. The controls worked and the puzzles along with other level design were done well. Love the death screen lol.
Things I think should be fixed or improved:
-The enemies can damage you while dying.
-Attacking interrupts your jump and resets the gravity.
-There wasn't any music playing at the upper section.
-You don't start with full health after death.
-While the final boss fight was very interesting, it was too obscure and difficult for its own good. The attacks weren't telegraphed, there were a lot of projectiles and the character had no invincibility time so dying was very easy. I kinda have a love-hate relationship with it.
While I have some complaints I still enjoyed my time!