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