Stunning work! I can't believe somebody made a whole Metroidvania! The visuals are gorgeous, the audio compliments the action perfectly, and you really understand the pacing and level design conventions of the genre incredibly well. The only negative thing I have to say is that the jump height is super unforgiving. I lost count of the amount of times I'd slaughter a bunch of aliens with a badass laser, only to die by falling into lava because I caught my shins against the opposite ledge.
I've said this a couple of times, but I think this is the best Jam game I've ever played!