Very, very cute game, I love the little music, the win confetti VFX, and the animation the objects doe when appearing and disappearing. However, I was confused when I got the key, I didn't notice that it was on my left wrist at first. Also, some objects didn't disappear well between the levels (but nothing a little patch can't fix). I really liked the fact that there was a timer and an attempt counter, it makes sens especially in this kind of games. I would have loved more challenging levels ^^. I also noticed that you tried to develop/build it for WebXR, could you tell me more about it ? Why this decisions ?
If you polish it with more VR interactions like kokutouchichi said, it will be a great little game !
An overall lovely and great game, good job ! I hope to see you in next VR game jams !