The The Fate of Atlantis: Episode 1 Add-on for Assassin's Creed Odyssey has 5 trophies - 4 bronze and 1 silver.
Win the conquest of Elysium with freed humans from the 3 main regions.
Remember who you are.
Destroy all of the Marble Maiden Tributes.
Collect all the Keeper's Insights in Episode 1.
Kill all Overseers in Elysium.