Full list of all 53 Fell Seal: Arbiter's Mark achievements.
The base game contains 43 achievements, and there is 1 DLC pack containing 10 achievements.
Master all 6 special badge Classes
Get the second ending
Defeat Morgaine
Complete the Obelisk riddle
Win the second Tournament
Cleanse the Cursed Shield
Open all treasure chests
Complete the Ancient Path
Defeat at least 4 enemies with a single hit
Get the first ending
Master all 19 base Monster Classes
Craft a final-tier weapon
Visit the fifth Relic
Recruit Kairu
Obtain all gadgets
Master all Human story character Classes
Visit the fourth Relic
Defeat an enemy with a Berserk, Charmed, or Mind-Controlled enemy
Unlock the Spymaster Class
View all optional dialogue events
Defeat Lady Anquine
Open 50% of treasure chests
Win the first Tournament
Complete the Halloween encounter
Recruit Katja
Defeat an enemy with falling damage
Save Somier a second time
Visit the third Relic
Drown an enemy
Master all 20 base Human Classes
Unlock all 20 base Human Classes
Use your first Class badge
Recruit Bzaro
Visit the second Relic
Unlock the Demon Knight Class
Recruit Yates
Visit the first Relic
Craft your first item
Unlock the Marked Class
Master any Class
Defeat an enemy by using a Counter Ability or Thorns
Change Class at least once
Defeat a unit with its Elemental weakness
Complete all unique Hunts and large-scale battles.
Master all 22 Monster Variants.
Complete all Missions.
Enlist each of the base 18 recruitable Monster types.
Defeat an enemy with a Pet Effect.
Complete an encounter deploying only Monsters.
Fully upgrade all 5 regions.
Master the 3 new Human Classes.
Complete 100% of Missions in one region.
Build a Guild Upgrade.