Full list of all 21 Sheltered achievements worth 1,000 gamerscore. It takes around 20-25 hours to unlock all of the achievements on Xbox One.
Figure out the code
Subdue an enemy in combat
Have 5 plant stations in the shelter
Fully upgrade all systems
Take the camper van out on an expedition
Win combat using a gun
Conclude 10 quests or scenarios
Collect all ten tools
Fully upgrade a system
Travel 1000 miles (cumulatively) on the map
Search 200 locations (cumulatively)
Grow and harvest a plant from the plant station
Travel 500 miles (cumulatively) on the map
Survive 100 days
Travel 100 miles (cumulatively) on the map
Trap an animal on the shelter surface
Survive a week
Craft your first object
Upgrade a core system (Oxygen filter, Water filter or Generator)
Trap 100 animals on the shelter surface (cumulatively)
Fend off a breach by killing each intruder with traps