Pretty fun submission!
I really liked the particle effects you had upon object interaction, the graphics are really nice (especially the neon,,, love me some neon) and the little details you put in made the game so much better. Because of how expansive the world felt, I was really surprised by the level of detail you were able to implement.
Also, submitting a 3D game to a Metroidvania challenge is a challenge in and of itself which I feel like you did a good job with.
My overall downsides are I wish that the game felt a bit more fun. The game itself is very impressive (and this is what kept me going) but it felt kind of like a chore to do which isn't my style of game.