How do you beat the final boss in Sonic Unleashed

There are 3 parts on part 1 you have to punch dark gaia and dodge him. Then if you knock him out, he isn't dead he will then grab chip(gaia collossus) and then you will be sonic and have to hit each of his eyes. Then if you do it successfully dark gaia will absorb all dark power and turn into his true form with 6 arms and 7 eyes, 3 on each side and 1 big one in the middle. You will become super sonic and hit each of his open eyes however his huge eye is his weakness and will not open until you hit all the others closing them. It sounds easy but you have to watch out for dark gaia's slashes. If you manage to hit all eyes you win.