It was unclear how attacking worked, also the contrast between the background and the enemies made it hard to what was happening sometimes, enemy colliders stay on when they die. The full heal every attack also felt broken and maybe adding in some more "vampire surivor like"-esc elements like being able to choose btwn a heal and some other upgrade (whether is be speed regen, lower mob spawn rate etc) so the player has more agency when playing would be a good addition.