Instructions
Watch the paintings carefully. Ganon entered one of the paintings, all of which look alike. Look at each painting until you see him gallop out of the painting.
Fire arrows at Ganon immediately when he exits the painting. If all of your arrows hit, he will stop charging you and gallop into another painting. If you miss any arrows, he will attack you for critical damage, instantly defeating you.
Repeat Steps 1 and 2 two more times to knock Ganon off his horse, initiating the second half of the battle.
Swing your sword when Ganon fires an electrical bolt at you. You cannot dodge this bolt, so you must strike it and send it flying back to him. When the bolt strikes him, he will fall to the ground for a few seconds.
Dash to Ganon while he is down and attack him. Regular slashes with the sword are faster, but spin slashes will deal stronger strikes.
Repeat Steps 4 and 5 two more times to defeat Ganon.