How on and off?
7 months is a long time to get something as basic as that. Most pro's would probably only take approx. 3 too do that.
But, It was kinda fun. I have a few suggestions.
1. Create an accel property so that you don't walk at full sped or nothing.
2. Make death animations so its not an abrupt frame change. Or at least a fade out.
3. When completing a level, of course everyone automatically clicks next level. And as there are no stats on that page, it really serves no use other then annoying us.