Hi! the art is on point, just a few things:
-after floor 1, you're stuck in the same empty room, there is nothing to do;
-making the sword move after the player makes it hard to know where it is, especially since it's so big and it takes the focus off of the player: so platforming is hard;
-avoiding the spiked ball is basically impossible since it immediately comes for you;
-said spiked ball can be avoided by standing in a corner, which is something you don't want to allow;
also, you can dash with shift, but you don't say that in the controls section.
Interesting game though, reminds me of a dungreed boss fight. Following :)
P.S.
I'd appreciate it if you wanted to check my demo out, it's on my profile :)