Really enjoyable, simple but fun.
I like the character design and the fact that even the game has no music the bullets make noise with rythm and make some "procedural" music, really cool!
It took me some attempts but I beated the game, but it seemed to me that the hitboxes are big, like the complete sprite of the cubes are covered by the hitbox and I got hit some times just for a pixel, which didn't feel good.
Really nice game! Good job :D