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