Full list of all 67 Assassin's Creed Origins achievements. It takes around 60-80 hours to unlock all of the achievements in the base game on Windows.
The base game contains 53 achievements, and there are 2 DLC packs containing 14 achievements.
Complete all tours in the Daily Life category
Complete tours with at least 5 different characters
Complete one tour
Kill 30 enemies by shooting a fire arrow at oil jars.
Witness raining bugs in the desert.
Destroy an opponent in a Hippodrome race.
Win the first Hippodrome tournament.
Complete the last Main Quest.
Complete all locations.
Complete Main Quest "The Final Weighing".
Complete Main Quest "The Aftermath".
Feed a predator with a corpse.
Complete Side Quest "Seven Farmers".
Take 1 photo in 5 different territories.
Use Dawn & Dusk to make time speed forward 30 times.
Complete all hermit locations.
Complete all 12 Stone Circles.
Defog the whole map.
Kill a poisoned level 35+ enemy with the torch in less than 30 seconds.
Finish an arena boss with an Overpower Attack.
Sell 100 trinkets at once.
Defeat the war elephants Qetesh & Resheph.
Complete Main Quest "The Crocodile's Jaws".
Complete all arena events in the Krokodilopolis Arena.
Bring a tamed lion to a crocodile.
Tame a lion.
Defeat 8 Ship Captains.
Reach the "Top of the World" in the Black Desert territory.
Complete 15 underwater locations.
Kill an enemy with the predator bow from more than 60 meters while controlling the arrow.
Kill 10 enemies in a row without being detected.
Activate a Master ability.
Complete Main Quest "The Lizard's Face".
Complete Main Quest Dream Sequence.
Complete Main Quest "The Hyena".
Headshot kill an enemy with the bow while in the air.
Destroy 100 breakable objects.
Complete Main Quest "Pompeius Magnus".
Complete Main Quest "The Scarab's Lies".
Swim for 1500m, ride for 40km and run for 10km.
Be equipped with only Legendary equipment.
Use the eagle for a total of 30 minutes.
Run away from 3 fights with a hippo.
Craft 20 items.
Kill 3 enemies with one hit.
Reach level 20.
Defeat a Phylakes.
Solve a papyrus mystery.
Complete Main Quest "Aya".
Use all types of vehicle at least once.
Complete Side Quest "Lady of Slaughter".
Complete the Prologue.
Complete a tomb.
Perform 3 Assassinations from a zipline (The Hidden Ones)
Complete Main DLC Quest "The Greater Good" (The Hidden Ones)
Assasinate Tacito, Ptahmose and Ampelius (The Hidden Ones)
Perform a leap of faith from Arsinoe's sundial obelisk between 10 am and noon (The Hidden Ones)
Complete Side DLC Quests "Rise of Shaqilat" and "Shadows of the Scarab" (The Hidden Ones)
Complete the Walls-of-the-Ruler citadel (The Hidden Ones)
Kill an enemy with a headshot while they are being harassed by Senu (The Hidden Ones)
Free 20 Rebels (The Hidden Ones)
Complete the 5 Serqet locations (The Curse of the Pharaohs)
Reach level 55 (The Curse of the Pharaohs)
Acquire Eternal Maw for use outside the Afterlifes (The Curse of the Pharaohs)
Kill a Mummy by setting it on fire (The Curse of the Pharaohs)
Craft an upgrade using Shards of a Star (The Curse of the Pharaohs)