Eventually, preferably after the contest ends, since it would be too much help and could be abused (even thought they would lose 20 points), it would be nice if someone made a tutorial on collision detection when you have physics of all kind, including acceleration, depending of if you are on a moving platform or not. For moving platforms, one thing I thought is that you could check the ID of the block below you and if it's a moving platform, then you move in the same direction as the block, which switches after a few frames.
Slopes seems to be a major pain, though.