I really like the art style! the animations are very interesting too, especially the overhead slash one. gameplay is pretty frustrating, damage sound should be changed, but those have been mentioned in other comments.
my suggestions are for the feel of the movement and animations. the animations are good.
1. turn the player into a capsule so they don't stick to walls.
2. separate the player into two parts, probably with the legs being the "real" body, and having the torso and head as an attacher, so that the attack animations can play while the legs are still doing the appropriate movement.
3. speed up the walking animation to match the speed of the player + this is one animation that I don't like as much, could use some work meanwhile the others work really well as is.