I liked this game.
This is a very good example that shows how we should do good 'level design': when you get to a cool mechanic + some levels, what happens is that it doesn't matter if you don't use complex 3D Animations, VFX, cel shaders that amaze everyone (like in Zelda ToTK), etc... the game is fun because its core is very well done (and that's something that's also adviced for X.R. developers: your core mechanic and basic level's design should be fun withouth using the 'Augmentantion' feature - if it's for A.R. - , etc)... your game reminded me of that basic concept.
Thank You for submitting your game, it's a lot of fun.