I thought the game was going to be really, really cool. HOWEVER...
Never make a precise platforming game have a SLIPPERY floor. Every time I made a mistake, I thought "AUGH this is frustrating!" instead of "Well that was my fault, I should try again. Maybe I'll be better this time around."
That is when a game becomes more "unfair" than "challenging." And you can only take so much unfairness before getting worn out from the game and wanting to stop.