Hey, nice game, the platforming feels good, and I know you said it’s only the first release, but here is my feedback:
First thing I did when opening the game was fall of the edge and softlock myself, maybe add a world boundary that kills the player XD
Also, the more I died the more “black goo” the enemy were shooting on the first shoot, pretty funny but probably a bug. Otherwise I’d really like more levels, the level design reminded me of those old flash rage platformer and was pretty fun for the shortness of it ! ^^