it looks like a very solid foundation of a game. the animations are working, the artwork fits, the music is cool.
but ive tried 10 minutes but didnt even get past the first level. you need to kill some of the enemies with their own bullets i guess? This is seriously some hard stuff with all the movement. i think it would be a lot more accessable if you start way more slower and easier and maybe try to show the concept by only trying to get one enemy hit by their own bullet, that way you can get familiar with the concept and then start to increase the difficulty. and the instant death with one hit is also pretty unforgiving
And adding some sfx for getting hurt, hit, etc i think would also help a lot in the "juice" department :)
other than that, keep up the good work :)