Nice visual effects there! The style is great, I love it.
I was very restricted at the beginning, and only after getting +100% speed the game started to feel right. But that's for the rogue-likes in general, I guess, to gradually give abilities that would normally be there by default.
Attack patterns were not very predictable at some times, but that was compensated with a smart choice of having plenty of health.
And it is super cool that you made it all as a solo dev! ¦3