Full list of all 56 The Long Dark achievements. It takes around 200 hours to unlock all of the achievements in the base game on Windows.
The base game contains 40 achievements, and there are 2 DLC packs containing 16 achievements.
Survive an entire Night outside (single game).
Kill the Old Bear.
Survive 10 days in a single Survival Mode game.
Survive 1 day in a single Survival Mode game.
Survive the first Aurora event.
Bring Jeremiah back from near death.
Leave Milton. Complete Episode One.
Complete Lily's Story.
Open all Safety Deposit boxes in Milton.
Prepare Grey Mother for Winter.
Make your way to Milton.
Escape the ravine after your crash.
Survive 50 days in a single Survival Mode game.
Visit every interior location in both Mystery Lake and Coastal Highway (single game).
Harvest 10 Complete Deer Carcasses (single game).
Survive 3 consecutive Nights outside (single game).
Survive the first 50 days without firing any firearms (single game).
Survive the first 25 days without killing anything (single game).
Sleep in a Bearskin Bedroll while wearing a Wolfskin Coat, Deerskin Boots, and Rabbitskin Mittens.
Catch a fish weighing over 5kg (11 lbs).
Survive 25 consecutive full days only consuming calories harvested from wild plants and animals (single game).
Survive 500 days in a single Survival Mode game.
Heal yourself using all types of natural medicines (single game).
Stun a rabbit with a rock from over 25 meters (80 feet) away.
Harvest 25 of each kind of plant (single game).
Get all skills to level 5 in a single Survival Mode game.
Survive one day on Interloper difficulty.
Keep calorie store above zero for 10 days.
Survive 100 days in a single Survival Mode game.
Map all named locations in Survival Mode.
Fill all clothing slots with 100% condition gear.
Complete all Research books.
Climb to the top of Timberwolf Mountain.
Craft a full set of improvised Tools.
Keep a campfire burning for 3 days.
Complete all six Survival School objectives across Episodes One and Two.
Leave Mystery Lake. Complete Episode Two.
Find all Forest Talker caches.
Find all hidden caches in Episode One and Episode Two.
Complete every Challenge.
Get to Thomson's Crossing.
Enter the Crash Site.
Rescue all three lost Survivors and stock the Hall with supplies.
Intercept the Radio transmission.
Leave Pleasant Valley behind. Complete Episode Three.
Tall Tales
Collect all six Notes with details on Forest Talker activity in Pleasant Valley.
Defeat your first Timberwolf pack.