Hello,
I played it for a while and your art style feels quite nice. Did you do all the pixel art for the game?
My biggest issue with the game was the controls. if I am pressing space and then I long press any other input, my expectation was that the attack will be registered. meaning as soon as the current animation is complete, the next one will start. This never happened and it was quite frustrating. SO not only did I have to time the enemy counter but also my own attack animations. At one point I just gave up attacking near to when I knew the enemies would attack.
Apart from this I found the HP bar to be too short visually. You might have a game design reason for that, but it did not feel to intuitive as a player. Also, I noticed HP wen tot negative. (maybe just clamp it to zero?)
Apart from this I like the roguelite element of the game. Looking forward to see where you take this!