Complete the indicated task to unlock the achievement.

Achievement	How to unlock
666 Kills	Kill 666 enemies.
Arena Master	Beat all Arenas.
Arena Novice	Beat one Arena.
Bad Devs	Kill the devs.
El Huervo	Unlock the Hunter Apostle.
Full Collection	Collect all Cards.
Hard Salt	Beat the game on Hard.
Strong Allies	Spare the Witch.
Swarm the World	Clear every level.
The Admiral	Defeat Admiral Pierce.
The Alchemist	Defeat Count Volgrave.
The Apostles	Unlock all Apostles.
The Archbishop	Defeat the Archbishop.
The Holy Necromancer	Defeat the Lone Warden.
The Mob	Defeat Deacon Raphael and his Mob.
The Thistle Guards	Defeat the Thistle Guards.
The Wharfmaster	Defeat Wharfmaster Glenn.
The Wicked Witch	Defeat the Witch.
Worth your Salt	Complete the Story.