In Assassin’s Creed Odyssey there is the hidden city of Atlantis, in this guide we show you how to find Atlantis. If you find the city and talk to Pythagoras, you unlock the following trophy/achievement:
Discover Atlantis and speak with Pythagoras.
If you are looking for a complete overview of all trophies and achievements or other puzzle solutions, here is our Assassin’s Creed Odyssey 100% Walkthrough.
Find Atlantis - Unlock Achievement/Trophy
To find Atlantis, you need to complete Side Quest "The Legacy of a Family". You will receive this quest automatically after the main mission "United Front" in Story Sequence 7.
This means that it is an automatic activation of events that you can not miss.
The quest takes you to Thera, one of the volcanic islands. There you will have to search the area with your eagle to pick up an antique board and then follow the rays of light that will bring you to the huge stone door.
Behind the door awaits Atlantis - The Lost City, you will meet Pythagoras.