Not bad! The visuals are clean and cheerful (the reflection on the water is, in particular, a nice touch) and the music is appropriate and well-composed. The sound effects, although of good quality, sometimes cut out upon continuing from a game over.
The controls, although not as tight as the game you're imitating, are decent. You did a good job of recreating the basic gameplay of Super Mario Brothers, and the medals do a good job of giving the player something to aim for in an endless-run game. It seems you have to click NEAR the pause button instead of ON it when using the mouse, so although the inclusion of touch controls is a very impressive element, you may need to tighten up how they map to the screen.