I like this idea of - Either you move on holding the catalyst or you shoot the hell of the enemies! Art is really splendid, I'm a big fan of the thumbnail art!
Just wish some aspects of the game had a bigger game feel to it: Bigger bullets please! A shooting sound with more bass and impact to it, volume adjustments, bullet fire should be louder than its impact on the wall, enemies sounds shouldn't be too loud, etc.
I also admire that this game is procedural, which gives a new experience each time, but there was an instance where I spawned into a room that (I presume) had no exit. A pause menu with a retry button would be welcomed for instances like this