Full list of all 48 Cult of the Lamb achievements. It takes around 15-20 hours to unlock all of the achievements in the base game on Windows.
The base game contains 37 achievements, and there are 2 DLC packs containing 11 achievements.
Unlock all Follower Skins.
Unlock all tarot cards.
Unlock all fleeces.
Beat Shamura without taking damage.
Beat Kallamar without taking damage.
Beat Heket without taking damage.
Sacrifice 10 Followers.
Gain 20 Followers.
Defeat the One Who Waits.
Defeat Shamura.
Catch 1 of every fish.
Defeat all opponents in Knucklebones.
Unlock all doctrines.
Find all 5 locations.
Beat Leshy without taking damage.
Unlock all weapons.
Have 666 gold coins.
Defeat Kallamar.
Unlock all curses.
Take confession.
Cook a Follower meat meal.
Defeat Heket.
Fully Upgrade Cult.
Unlock a new fleece.
Gain 10 Followers.
Sacrifice a Follower.
Salvation awaits the fallen soul.
Reignite the lighthouse.
Defeat Leshy.
Win a game of Knucklebones.
A new world awaits.
The first devotee to the Cult of the Lamb.
A deal that cannot be undone.
Let the Word be known.
Defeat the first mini-boss.
Gain 5 Followers.
No longer a servant, no less than a God.
Collect all Relics.
Get your Gold back from Midas.
Complete a row in Purgatory.
Unlock all outfits.
Hatch 5 eggs.
Completely Upgrade the Temple.
Have 12 Disciples.
Unlock all lore.