First play:
Fun one! and I'm really looking forward to watching how it evolves from here. Great work! The only note I have at the moment is that the bosses and mini-bosses would benefit from a health meter. I aaaaalmost gave up at the end because I legit thought it wasn't supposed to end (given that there's only one stage right now). Only reason I kept going was because there was a summary screen posted here in the comments that I hadn't seen yet, so I kept playing for a bit longer and then got it.
Pretty minor issue though. The gameplay and mechanics are great. Really excited to see the variety of weapons and buffs you end up introducing over time.