Really cool idea! Nice blend of puzzle and action, great choice of music and sound effects to support it.
Eventually one of the levels seems to have bugged out on me and I got stuck, so couldn't see the whole game, but otherwise the levels seemed pretty straightforward and self-explanatory. There was a tricky level where you had to jump at the right moment and in the right spot between 2 flying particles, that took a while to get right, but overall I didn't have much trouble.
I wish I could rebind Q and E keys, they feel swapped, as well as rebind jump to spacebar - jumping with W is awkward.