Full list of all 120 Darkest Dungeon achievements. It takes around 200 hours to unlock all of the achievements in the base game on Windows.
The base game contains 69 achievements, and there are 3 DLC packs containing 51 achievements.
Complete the game on Stygian
Complete the game with default difficulty options
Complete the game
Dismas and Reynauld Made it to the final Darkest Dungeon Quest
Have a character survive 5 attacks at Death's Door in a single combat
Complete the game within 99 Weeks
Complete the game on Radiant
Lose a hero to a Maggot
Kill any boss with a party of four afflicted heroes
Kill a Squiffy Ghast with a Jester
Lose a hero to an obstacle
Lose a hero to a trap
Lose a hero to hunger
Party wipe on a boss
Lose a hero to Wilbur
Kill any boss with only one hero remaining
Acquire all your Ancestor's Trinkets
Complete a dungeon with all 4 heroes afflicted
Start a Darkest Dungeon quest with four heroes of resolve level 0
Lose all four heroes on a Darkest Dungeon quest
First party wipe
Slay a Shambler
Complete all Caretaker Goals
Reach week 104
Kill all bosses
Have one of each class on your roster
Fully upgrade the Abbey
Fully upgrade the Town
Fully upgrade the Tavern
Kill the Shrieker
Kill Squiffy Ghast, Swine Skiver, Bone Bearer and Hateful Virago
Lose a Legendary (Level 6) hero
Defeat the brigand Vvulf
Reach week 52
Fully upgrade a hero's weapons and armor
Fully upgrade the Blacksmith
Complete a long quest
Fully upgrade the Guild
Slay 1000 enemies
Start a quest with all four heroes of Resolve Level 6
Raise a hero to Resolve Level 6
Raise 4 heroes to Resolve Level 6
Collect at least 20,000 gold from a single quest
Complete 25 quests
Defeat 100 Beast enemies
Defeat 100 Eldritch enemies
Walk 500 steps with one hero
Defeat 100 Human enemies
Lock a positive Quirk in the Sanitarium
Defeat 100 Unholy enemies
Kill 50 enemies with one hero
Complete a quest in all four regions
Complete 10 quests
Collect at least 30 heirlooms from a single quest
Lose your first hero to heart attack
Slay your first boss
Complete a medium quest
Dismiss your first hero
Abandon a quest
Lose your first hero
Upgrade a Combat skill
Fully upgrade at least four of a hero's skills
Visit the Graveyard
Treat a hero in the Abbey
Complete a quest
Learn a new Camping skill
Treat a hero in the Tavern
Remove a Quirk in the Sanitarium
Reach the Estate
Kill an ally while under the Curse
Have your entire roster affected by the crimson curse
Defeat the Fanatic
Lose a hero to Wasting Away from the Curse
Collect The Invitation
Contract the Crimson Curse via contagion
Defeat the Countess
Defeat the Viscount
Rescue someone
Defeat the Baron
Get infected by the Crimson Curse
Collect your first Trinket Set
Build The Red Hook
Recruit a flagellant
Build your first district building
Collect All of Color of Madness Trinkets
Fight Every Wondering Boss in Endless
Defeat the Sleeper With 2 Afflicted, 2 Virtuous Heroes
Lose a Hero Equipped with the Miller's Pipe
Get 300 Kills
Reach Death's Door From Farmhand's Riposte
Lose a Hero Equipped with the Coat of Many Colors
Build the Windmill
Use The Shard Dust Provision
Earn 200 Shards In One Endless Run
Get 200 Kills
All 4 Heroes Dodge the Miller's Reaping
Get 100 Kills
Kill the Sleeper's Herald With a Riposte
Defeat the Sleeper
Gain the Refracted Affliction
Acquire Mildred's Locket Trinket
Defeat the Thing From The Stars
Defeat the Miller
Complete The First Farmstead Quest
Kill 600 enemies in the Butcher's Circus
Win 100 matches in the Butcher's Circus
Cause 150 heart attacks in the Butcher's Circus
Reach the max Prestige level in the Butcher's Circus
Win any 10 matches without losing any heroes
Kill each hero class in the Butcher's Circus
Win a match without using any trinkets
Have a hero survive 5 death's door checks in a single match
Have a single hero survive 4 heart attacks in a single match
Win a match using ONLY stress against your enemies
Win a match in the dueling grounds
Daze 10 enemies in the Butcher's Circus
Cause an enemy hero to have a heart attack
Kill an enemy hero in the first round of a match
Have a single hero deal deathblows to 4 enemies in a single match
Play your first match in the Butcher's Circus