I enjoyed this. Sad that I am just that good. No enemies want to come face me. I agree with what others said. Currently I dont see a use for the dash.
I would like to see more difficulty. Currently it's rather easy. Just that the player has to put in more thought when to pick up the sword. When to kill enemies and more. Currently I pick it up. Slash a bit. Place it down further from the enemies.
Maybe in combination with bullet hell mechanics? Or some other mechanics that change the area. This way the player has to plan their swings more careful.
Great game!