Assassin's Creed Odyssey: Judgment of Atlantis is the third part of the second expansion set called Fate of Atlantis. The last of the main quests in the game is Fate of Atlantis. You will fight against the ultimate boss in this game.
This mission begins with a meeting with Poseidon and his two enemies.
You can decide whether you want to defend Poseidon or let them start fighting.
After talking to the heroes, you'll stand face to face with the boss. You must defeat the boss to be able to move on.
The boss mainly presses against your hero with fast movements. The best thing to do is to attack him from a bow from a long distance.
Fire arrows work pretty well on this monstrosity. They give you an advantage because your opponent is constantly losing his health, even if you don't attack him.
When you kill a boss, you will be transferred to the "real" world. There your only activity is to fight a short battle with the opponent. When you do this, the DLC will end.