Why did I even.. enter this thread. D:
I like the game, but it's impossible to finish it.
The creator/s haven't tweaked the friction to let you climb that hill (your front hooves can not slide at all, they stop the horse immediately no matter at what speed you're running), resulting in a blocked game (unless you grind the ascension of the hill through erratic movements) - What I kind of did.
I think the wonky physics are the total point of the game. ;]
However! A little tip. K+L > H > J+K > H > repeat - If you do this in a steady rhythm you'll get far.
Cheers.~