its alright. the art is great and so is the programming, but honestly there should be black-out transitioning to scenes for it. theres also a bit too much bright colors for graphics. one thing that would be really cool is if there was a sort of backstory to all of this, and maybe even upgrades for stuff. also adding a pause menu for this would be great.
one thing that i do enjoy about it are the little messages when you finish a stage, pretty funny!
TL;DR: add blackout-transitioning for when you switch to scenes, maybe reduce the bright-like colors, maybe add a backstory, maybe upgrades for stuff, and absolutely add a pause menu.