I'd request putting the "level number" somewhere. I don't know how close to the end I came, because I don't know what level I got to, but it must've been pretty close to the end. Also, I noticed you have two different leader-boards, but there's only one score or points that ever appeared in game, and that was time; so, I have no clue what the other one is.
But, it's very well done. Effectively simple.