Nice! The platforming feels nice and fast.
Problems I would say is that it can be a bit hard to keep my eye on the player sprite, or notice interactable NPCs or objects until the interact icon appears. Probably because of the amount of black pixels used, everything seems to blend a together a bit.
Also, combat can be a bit frustrating because of how you get locked into a attack animation, locking movement and direction. Makes the game feel less responsive to my key presses.
Other than that, it's pretty enjoyable. I like the music.