The player and the enemies all look great, with nice color palettes and lively animations. The music is upbeat, and the sound effects add to the atmosphere.
I was somewhat frustrated by the fact that the player cannot dash after being hit by an enemy. This is a legitimate design choice (and it's communicated by the flashing sprite), but it still kept tripping me up.
This game would really benefit from something more... different types of enemies, pickups, events, and so forth.