Wow, I got addicted to it instantly! I did a 1,1k run ^_^
I think this a very solid endless runner game! The animation of the thief is super smooth. It's so satisfying to slide and jump. I think with some polish, this could be made into a decent mobile game with easy controls: if you top the upper half of the screen you jump and if you tap the lower half you slide.
Maybe the only thing I would do is to move the camera a bit more to the left, so I can see more of the upcoming challenges... and of course some polishing.