I didn't get past the first level(unless it is one continuous level where each jump is the level), only got as far as when the platforms are moving up and down as the game won't let me jump when the platform is going down and it won't let me make the jump from the 1st to 2nd one if the thing is still going up. Having to do the same thing over and over again due to failing a jump since you can't jump on downward moving platforms felt very harsh and checkpoints would go along way. would also be nice (and would fix the problem with the downward moving platforms) if you kept momentum of the platform when on the platform.