Full list of all 93 Assassin's Creed Odyssey achievements. It takes around 80-100 hours to unlock all of the achievements in the base game on Windows.
The base game contains 50 achievements, and there are 5 DLC packs containing 43 achievements.
Recover the Cyclops's eye from a goat on Kephallonia.
Engrave a Legendary Item with a Legendary Effect.
Complete 20 Bounties, War Contracts, or Naval Quests from Message Boards.
Complete Xenia's questline.
Complete the Hippokrates questline.
Unveil all sub-regions of Greece.
Perform an Overpower Attack with every weapon type.
Complete all underwater location objectives.
Complete Episode 9 + Epilogue.
Upgrade your Spear to Tier 6.
Defeat all the Cultists of Kosmos.
Complete Episode 8.
Complete Episode 7.
Complete the Olympic questline.
Become the first Mercenary.
Upgrade the Adrestia to Legendary Status.
Complete 20 Quests on Pephka, Obsidian and Abantis islands.
Defeat Medusa.
Outwit the Sphinx.
Discover Atlantis and speak with Pythagoras.
Defeat the Cyclops.
Become Champion of the Arena.
Complete Episode 6.
Raise your Bounty to the maximum level.
Defeat the Minotaur.
Reach Level 50.
Complete Episode 5.
Fully crew the Adrestia with Legendary Lieutenants.
Defeat a Mercenary in the Arena.
Equip a Legendary Armor set.
Acquire a Tier 3 active Ability.
Defeat a full cluster of Cultists of Kosmos.
Complete the Daughters of Artemis questline.
Cleave a ship while having an all-women crew.
Recruit and assign a Legendary NPC for your ship.
Equip 1 Legendary melee weapon and 5 Legendary armor pieces.
Complete Markos's questline.
Complete Episode 4.
Spend the night with another character.
Sink your first Epic Ship.
Win your first on land conquest battle in any region (excluding Megaris in Hero's Journey).
Kill the Leader of any Region with Low Resources, other than Megaris.
Complete Episode 3.
Acquire and equip your first Legendary item.
Complete Episode 2.
Upgrade the Adrestia for the first time.
Cleave a ship in half.
Complete Episode 1.
Engrave your first item.
Complete the Battle of 300.
Heal by parrying 10 times with the Judgment of the Lion.
Kill 10 enemies using the Fury of the Bloodline Ability.
Kill 10 enemies using the Rapid Fire ability.
Land a Rush Assassinate that chains 4 times with the Blade of the Lion
Set 10 enemy ships on fire.
Kill the Makedonian Lion
Acquire the Sword of Kings
Kill all the Ancients in the Order of Dominion in Messenia
Kill all of the Ancients in the Order of the Storm in Achaia.
Secure your bloodline
Heal by getting 10 headshot kills while you have the Golden Harbinger equipped.
Continue the bloodline.
Kill 10 enemies using the Death Veil ability
Kill all the Ancients in the Order of the Hunters in Makedonia
Discover the truth about Darius' past
Complete Old Flames Burn Brighter
Complete Every Story Has an Ending
Complete The Daughters of Lalaia
Complete A Brother's Seduction
Complete The Heir of Memories
Complete The Show Must Go On.
Complete The Image of Faith
Complete One Really, Really Bad Day
Complete A Poet's Legacy.
Complete Divine Intervention.
Complete A Friend Worth Dying For
Kill 10 Isu Soldiers with the Blessing of Kronos enhancement.
Defeat the Hekatonchires.
Forge the 3 Legendary Weapons.
Completely fill the Knowledge Sequence.
Collect all the Keeper's Insights in Episode 3.
Dethrone the king.
Defeat all of the Fallen.
Close all Tartaros Rifts.
Collect all the Keeper's Insights in Episode 2.
Defeat Cerberos.
Win the conquest of Elysium with freed humans from the 3 main regions.
Remember who you are.
Destroy all of the Marble Maiden Tributes.
Kill all Overseers in Elysium.
Collect all the Keeper's Insights in Episode 1.
Defeat Arges, the Bright One
Defeat Steropes the Lightning Bringer.