Good concept, it's really missing the background to get a better read of how fast your character is moving, that and damage feedback on the enemies. Also you might want to make the hitbox on the player character a bit smaller

It was close to being a good game, and it would have if there was a background and some particle effects as it seemed a little bit empty. also, the game was pretty hard and i didnt know when i hit the enemies, so i would recommend the enemy flashing when its hit