This is such a fun concept! I loved the overall vibe of this game, and I am truly surprised that you were able to complete it all with one person!
Fun: most of the "fun" was with the theme. I didn't find myself particularly engaged in the game play itself, but maybe I just needed to give it more time :)
Theme/Aesthetics: this theme was top notch. Well done! No notes.
Music: this was a good pick to fit the vibes you were going for, albeit the music itself felt like stock music — but it was! I'd love to see what a composer would do with this game. I personally would have gone with a lot of the instruments that you did, but upped the reverb to make the world feel larger when at a tiny scale and use metallic sounds for bits of "magic" in the air.
Mechanics: worked stably for me! I would have preferred that the camera view didn't zoom in so much when I moved forward so much. Overall the gameplay was smooth and I didn't find myself frustrated with any glitches.
Story: again, really cool concept! I would've liked to see more overarching narrative, but for a one-person team this is way better than I would expect with narrative design.
Overall, great job!! I'd love to work with you on a future jam.