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