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