I like the art, the environments look really good.
Player controls fine, but at times feels a little slippery, and the hitbox makes it easy to snag on things.
The layouts are interesting, it's cool getting to see a few varied environments while exploring around. But the screens are so big that many enemies end up being inconsequential, as there's more than enough space to navigate around them easily. I think this game would've benefitted from having each screen/zone be about 25%-50% smaller, to force the player to engage with the challenges a little more directly. You'd also get a better look at the environment art.