This ones complicated. in his first form you must slash all his small orbiting eyes and he will pause for a minute, run over QUICKLEY, HE MAY MOVE AROUND, and slash your sword non-stop at his large eye, it's on his tummy-area. beware though as the eyes will begin to shoot lazers, avoid them, your sheild wont protect you here. they will eventually be larger and black, use your gust jar to suck off their protective coat and slash them again, continue until he warps you to his second round. NEXT, Vaati will have 8 purple closed eyes on his round body, shoot 4 of them, keep shooting until you get 4 red ones in a row, blue will not affect him. now split yourself in 4 to match his red eyes, once you do this run over and slash at him until all 8 eyes, blue, red, or purple, dissapear. then quickley, and repeadetly slash at his big eye. he'll push you away (without harming you) and grow back his eyes. continue until he freaks out and "dies," (for now.) be prepared to be quick and accurate at your aiming, though. because he gets a lot faster and where his purple eyes once were, will change location. LAST FORM: Vaati will go away and allow you to set zelda free, you'll go to the sanctuary, and he'll stop you infront of the entrance, get ready for a fight cuz he's completely transformed, now. he will shoot his arms into the ground, and they'll pop up somewhere else and come toward you, shoot them with your cane of pacci, a small door will apear at the bottom of his arm, shrink yourself and get inside. you must kill the eye inside whoms' PUPIL FOLLOWS YOU AS YOU MOVE! the others will do no good. once you kill this one, the others will dissapear, too. get out and do the same to the other arm. but be careful you'll need your lantern inside this one it's dark. once he loses his arms and grows little wings, get on the shining plat forms and split yourself into THREE, HOLD THE FOURTH ONE UNTIL HIS FOUR EYES TURN LIGHT BLUE, THEN SPLIT INTO FOUR AND SLASH YOUR SWORD AS HE SPITS THE BLUE STUFF AT YOU, they'll turn around and stun him for a moment, run up and slash him as much as you can. if you do this correctly, and avoid his electric orbs he fires at you, he will perich and you will have beet him for good!