Full list of all 72 Assassin's Creed Shadows achievements. It takes around 80-100 hours to unlock all of the achievements in the base game on Windows.
The base game contains 54 achievements, and there are 4 DLC packs containing 18 achievements.
Complete the Seta River Killers
Reach Level 80
Reach Knowledge Rank 10
Obtain two golden katana
Escape Sumoto Castle (Claws of Awaji)
Defeat all three of Yukari's taisho (Claws of Awaji)
Return the Regalia to the Emperor (Claws of Awaji)
Eliminate all targets in Awaji (Claws of Awaji)
Equip a Legendary Bo (Claws of Awaji)
Eliminate an enemy after using all three postures of the Bo in a single combat (Claws of Awaji)
Kill 5 enemies with one single Wind Slash strike (Claws of Awaji)
Kill an enemy with a Tezutsu that you dropped after being hit by that enemy (Claws of Awaji)
Eliminate 7 enemies through one single use of Windstep (Claws of Awaji)
Defeat the Old Ashigaru (Claws of Awaji)
Complete all Landscape Sumi-e in Awaji (Claws of Awaji)
Reach Hideout level 13
Train Kinu and Kane
Complete 5 Corrupted Castles