Please note that we take a direct path to the end boss here, which is not necessarily advisable if you want to discover everything about the game (even if nothing prevents you from returning later. The castle is gigantic and holds many secrets.
Ganon (end boss)
From the beginning, if you have saved the 4 divine creatures, the first form of Ganon should arrive at mid-life. What follows is finally quite classic, but beware of its little fireball which, once on land, will create a huge AOE. When he has only a quarter of his health left, he will have a very special shield to protect him from conventional attacks: to cause him damage, you will have to make precise dodges to slow down or send one of his projectiles back to him with a shield.
This first form defeated, the background is changing and the beast shows its true face for a second very very very (too) simple fight. Take the bow of light given by Zelda and wait for her to show the monster's weak points. Destroy them to the last one and then go to his head. Examine his attacks carefully and then use the updrafts to gain height and explode the large eye on top of his skull (only when it is open).
Written by Bastien "Lloyd" Dubosq-Luyer. Translated from French by Millenium.us.org.