Hey, nice game!
I see a couple bugs over here and over there but it was overall playable and enjoyable. Good design, good story, good sounds and good gameplay!
Something I dont get is the player collision mask, its not totally clear where your collision box is so I will suppose its your whole character, maybe that's why enemies hit me so easily.
Second: SPACEBAR for SHOOT, I get why you make it press once to shoot cuz other way you would be unable to hold it to make the charged shoot, but having to press it once and again and again to shoot almost break my keyboard xD
It would be nice to be able to hold it to shoot every 1 second.
I liked how you make the enemies and player movement animations, subtle but effective for me!
Hope my feedback helps you to make your game even more awesome! ;3