You have something here, like Garr said need some controls. Not sure if I'm supposed to get as far as possible without dying or if Im supposed to kill the mobs. The art is stellar, music is solid, visually this is a masterpiece, gameplay wise it just needs some clarity. Also the game over effect is a nice touch. Keep working on this idea.
I added a comment that explains the full controls. I imagine you two won't be the only two who are confused. Thank you for all of the super nice compliments!
Also, for the jam edition you can try to "speedrun" through it without killing anything, but I think some of the enemy placement combined with your limited health makes that borderline impossible. Now that it's more clear how to shoot you'll hopefully be able to make it through! Thanks again!