Here is the full list of all 44 Aragami 2 achievements.
Equip the armor of a legendary hero
Complete Chapter 9
Find all collectibles in Woods of Memory
Complete Chapter 8
Complete Chapter 7
Find all collectibles in Akatsuchi Palace
Complete Chapter 6
Find all collectibles in Akatsuchi’s Capital
Charm an enraged Fanatic
Complete Chapter 5
Find all collectibles in Devastated Village
Complete Chapter 4
Find all collectibles in Daikizo Mine
Reach Level 30
Find all collectibles in Isolated Village
Counter a fireball thrown by a Scorcher
Perform a Shadow Kill
Perform a Stealth Assassination on a Nenshö Aragami
Complete Chapter 3
Find all collectibles in Highcastle
Obtain an S-Rank in 10 missions
Perform a Shadow Pull on a Gatekeeper
Find all collectibles in Kakurega Village
Complete Chapter 2
Kill 300 enemies
Eliminate 10 enemies while hiding in tall grass
Apply a Dye for the first time
Find all collectibles in Big Akatsuchi Mine
Eliminate 25 enemies while grabbed to a ledge
Eliminate 10 enemies while clinging to a wall
Find all collectibles in Lone Mountain
Skip a cinematic
Knock out 100 enemies
Apply your first Essence Runes
Complete Chapter 1
Find all collectibles in Distant Countryside
Eliminate 25 enemies while airborne
Craft your first Equipment piece
Purchase a Support Item for the first time
Unlock an Ability
Unlock a Shadow Power
Complete your first mission
Find a hidden collectible
Complete the Prologue