How can you beat mighty girl 2

For the first part with the jet-ski, put the jet-ski towards the back (the left side) of the screen so you have more of a heads-up with the sharks and floaters. When you get to the part where the rocks are coming down, move the jet-ski all the way to to the right side of the screen. The rocks don't come there. And finally, for the climb up the mountain, jump over all the little boulders and go under all the giant ones. You will have a better chance of winning that way.