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