Very neat! I was just thinking that it would be an amazing mobile game, and going to your actual game page I can see that that is already your plan. Nice thinking.
For the desktop version: the fixed resolution kind of messed up my view. But for a mobile game it'd be OK. Also, I kind of dislike the acceleration of the main character: I think it leads to more mistakes. But for a mobile game that's totally OK!
I like how you have long-term goals to work towards. But I would kind of prefer if you told players how to unlock each of the skins, as it's not too clear. If I feel that a new character is an attainable goal, I'll play more of the game!
Overall, nice job. The visuals and audio are a nice fit to the gameplay, and I like the basic gameplay. Good job! Good luck with the mobile release!