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