Nice game, but why is the ice cube so heavy? He falls like he's made of cement instead of ice XD Not only is it a bit nonsensical, but it makes it extremely hard to time a double jump, and wall jumps are almost completely unusable.
I really like the animation style though, and it's a neat little platformer aside from the above issue. Would be a 4/5, but the physics brings it down to a 3.5/5. Since we can't do fractional stars however, I'll go ahead and round up to a 4 ;)