It's a pretty good game, the physics are weird though. I'm used to the player having a velocity, but here it's just moving or not moving. Other than that, the music isn't really fitting for this type of game.
I would recommend this to other people though.
Hey, it is a start!
The gameplay is good, but the controls are kinda wonky. The hitboxes feel a bit weird and turning in midair is a bit hard.
many Games fail to make a tight control to make death seem fair but your game does that and more. it has amazing blood effects and great animation. If you make another game I will a 100% play it if it is like this one. keep up the good work.
Even though it is very ugly and lacks sounds, the gameplay is good. The dark challenges are a nice extra. Also, I agree with everything MerwinAtticus wrote.
You should also consider another control setup (maybe optional), because playing with one hand makes it harder for no good reason.