Super clean and simple, love the aesthetic even though it's definitely a little dark. (Though I guess that's what makes finding the cans tricky?)
Intuitive controls with UI that's easy to understand what the objective is. Sounds here really makes all the difference honestly, good use of it! Only issue I encountered was that on the second can, I was backtracking to try to find it, and since they have collision/physics, I knocked into in by accident and it was moved to a place where I couldn't shoot it. Full 360 camera might have been nice, but I can see it being a good intentional design choice depending what you are going for. (Back tracking to find stuff you missed is a pain without being able to look back where you came from.)
Overall it was a pretty cool little demo. Simpsons track at the end was an appropriate reward.