Use the arrow keys or WASD for moving and jumping. (Jumping is kind of pointless BTW but I put it in just for fun.) Press space to turn sideways. If you stay in for more than 25 seconds, you win.
The levels are sort of misnamed... beginner is more like easy, easy is medium, medium is hard, and hard is...UHH........... (If you beat hard, I will give you a million dollars) (just kidding but still) I have managed to beat the Fantasy Run.