Enjoyment: It's great, a wonderful mix of challenging but achievable, it was enough to make me play 6 times to try to get further.
Concept: I actually wouldn't have thought to play infinite runner, but it works super well, and you definitely make full use of the premise after teaching the user incrementally, so that's awesome.
Presentation: Obviously we're working wit simple stuff here, but it's coherent and pretty impressive for doing it all yourself. I like the Robot avatar a lot.
Use of limitation: Very good, a creative and well-performing utilization of the concept.