How to Complete The Gates of Atlantis Quest in Assassin’s Creed Odyssey

In Assassin’s Creed Odyssey, the Gates of Atlantis quest takes you on a journey to seal Atlantis and unlock a thrilling ending. To begin, you must solve a mirror puzzle to access Atlantis, and then recover four powerful artifacts scattered across Greece, each guarded by a legendary mythical creature. This guide will walk you through the mirror puzzle, the quests for each artifact, and how to seal Atlantis to complete the quest.

The Gates of Atlantis Quest Overview

The Gates of Atlantis quest requires you to return four powerful artifacts to their respective locations and defeat the legendary creatures guarding them. After you complete these steps, you’ll gain access to the endgame sequence. Here’s a breakdown of the objectives you’ll need to complete:

• Return the Artifacts to Atlantis.
  • Artifact in Boeotia (Sphinx)
  • Artifact in Kythera (Cyclops)
  • Artifact in Lesbos (Medusa)
  • Artifact in Messara (Minotaur)
• Seal Atlantis and trigger the ending sequence.

Be aware that Medusa is a level 50 boss, so ensure you’re well-equipped and ready for an intense battle.

1. The Artifact in Boeotia: Sphinx

The first artifact is located in Boeotia and is guarded by the Sphinx. This is a unique encounter since you don’t need to fight the Sphinx; instead, you’ll need to solve three riddles.

Steps to Collect the Boeotia Artifact:

1. Complete the following quests:
   • Lore of the Sphinx (Boeotia)
   • Awaken the Myth (Boeotia)
2. Once you reach the end of the Awaken the Myth quest, the Sphinx will challenge you with riddles. Answer the riddles correctly to claim the artifact.

2. The Artifact in Kythera: Cyclops

The next artifact is found in Kythera, guarded by a Cyclops. This boss fight requires a bit of preparation, as the Cyclops is a formidable opponent.

Steps to Collect the Kythera Artifact:

1. Complete these quests:
   • A God Among Men (Kythera Island)
   • Left to Dye (Kythera Island)
   • Stairway to Olympos (Kythera, then Forgotten Isle)
2. In the Stairway to Olympos quest, Empedokles directs you to the Forgotten Isle. Once there, find and defeat the Cyclops to obtain the artifact.

3. The Artifact in Lesbos: Medusa

The artifact on Lesbos is guarded by Medusa, one of the most challenging encounters in the game. Before battling her, you’ll need to complete several quests.

Steps to Collect the Lesbos Artifact:

1. Complete the following quests:
   • Romancing the Stone Garden (Lesbos)
   • Love’s Long Shadow (Lesbos)
   • Hard to Artemis (Chios)
   • Heavy is the Spear (Lesbos)
   • Keys to Happiness (Lesbos)
   • Writhing Dead (Lesbos)
2. After completing the quests, head to the Petrified Temple to face Medusa. Defeat her to collect the artifact.

4. The Artifact in Messara: Minotaur

The final artifact is located in Messara and is guarded by the Minotaur. Unlike the previous artifact, getting to the Minotaur is a more straightforward journey, though still requiring completion of several quests.

Steps to Collect the Messara Artifact:

1. Complete these quests:
   • Myths and Minotaurs (Messara)
   • Of Minotaurs and Men (Messara)
   • He Waits (Messara)
2. After completing the He Waits quest, you will enter the Labyrinth and confront the Minotaur. Defeat the Minotaur to claim the final artifact.

Sealing Atlantis & Ending

Once you have all four artifacts, return to Atlantis, located on the island of Thera. There, you’ll place the artifacts into the four pillars around Pythagoras.

• After inserting the artifacts, you will be treated to a lore sequence with Alethia. Pythagoras will initially refuse to seal Atlantis, but after some persuasion, he will agree to do so.
• Approach the console to trigger the next sequence, which takes you to the present day. In this sequence, climb the wall on the right and adjust three mirrors to send a beam of light to the room, as shown in the screenshot above. This will allow you to complete the puzzle and seal Atlantis.

After completing the puzzle, you’ll witness a cutscene and experience the ending of the Gates of Atlantis quest. Once the cutscene ends, you will return to Greece and be free to continue exploring.

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