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