Here is the full list of all 23 Sheltered 2 achievements.
Build all crafting stations
Survive 100 Days
Ally with all factions
Defeat all factions
Survive 50 days against androids
Complete 10 Faction Goals
Complete 20 Faction Goals
Complete All Faction Goals
Upgrade all initial upgradeable objects in the shelter
Imprison 4 people at once
Fully construct a pickup truck
Win combat by throwing rocks only
Kill 50 Bears
Stop a breach using surface traps only
Harvest 100 plants successfully
Collect all books
Max out the stats on a single character
Have one person with 5 physical ailments
Amass 1,000 units of water
Uncover the whole map
Find and hand in all the VHS tapes
Amass a collection of 10 gold ingots
Bring back 5 members from the brink of death