Survive 25 consecutive full days only consuming calories harvested from wild plants and animals (single game) Sleep in a Bearskin Bedroll while wearing a Wolfskin Coat, Deerskin Boots, and Rabbitskin Mittens. Survive the first 25 days without killing anything (single game) Survive the first 50 days without firing the Rifle (single game) Survive 3 consecutive Nights outside (single game) Survive an entire Night outside (single game) Harvest 10 Complete Deer Carcasses (single game) Visit every interior location in both Mystery Lake and Coastal Highway (single game) Survive 500 days in a single Survival Mode game. Survive for 100 days in a single Survival mode game. Survive 50 days in a single Survival mode game. Survive 10 days in a single Survival mode game. Survive 1 day in a single Survival mode game. Twenty nine of the achievements are hidden and will only display after they are unlocked.
This is a list of the fifty six obtainable achievements for The Long Dark.