I really dig this! The visuals and audio are incredible and the concept is really interesting. I hope you plan to keep working on it because I would love to see what this could become given more than a week of development.
Couple notes my just my own perspective. I think having a sprint button and making the walking speed that fast actually detracts from the experience a bit. It's a great vibe piece that I'd rather take more slowly and methodically, and the fast movements I think makes it a little harder to be drawn into. Also, maybe when you're looking through the idea (maybe even holding it), it could be a little transparent? Currently it blocks a lot of the viewport. If not transparent, maybe when you're holding it, it's shrunk slightly so it takes up less of the frame?
Great work, very cool experience! I hope if you don't choose to take this further, you explore similar styles/vibes.