I liked this entry a lot. I'm impressed by the amount of content it has, like it's almost a metroidvania!
I like the general vibe of the game. It reminds me of Kirby, but kinda darker aesthetically. Lumi is cute, though it'd be cuter with better animations.
I like the text narration while playing and all the powerups. I'm impressed that the gravity one affects almost any object, including npcs and enemy bullets. However, it's a bit clunky to use for oneself. The fire rate for the moonshot is a bit slow. Music stops for a while after playing (and resumes too late).
Though I didn't have any problems myself, I can see that some parts of the levels could use some design rework. Though, like I said, it didn't affect my playthrough.
Being this big and long, I'm glad you don't have lives and that the bosses don't reset theirs when you die. If it weren't for this, I would've definitely quit on the bat boss.
This game was a pleasant surprise :)