Full list of all 35 Fallout Shelter achievements worth 1,000 gamerscore. It takes around 80-100 hours to unlock all of the achievements on Xbox One.
Completed 100 objectives
Crafted every Theme
Built 1 of every room type
Leveled up a Dweller from level 1 to 50
Crafted an Outfit, a Weapon and a Theme
Scrapped 500 items
Changed the appearance of 10 Dwellers in the Barbershop
Completed 100 Quests
Collected 20 Legendary Outfits
Completed 60 Quests
Collected 20 Legendary Weapons
Collected all Fragments of 4 Theme Recipes
Collected all Fragments of a Theme Recipe
Made 25 dialogue choices on Quests
Successfully stopped 50 Raider Attacks
Collected 100 Stimpaks and 100 RadAway on Quests
Completed 30 Quests
Upgraded 20 Rooms to Level 3
Crafted 10 Outfits
Made 25 Babies
Crafted 10 Weapons
Killed 500 enemies on Quests
Built 50 rooms
Leveled up a dweller from Level 1 to 25
Completed 10 Quests
Killed 10 Quest Bosses
Built 25 rooms
Successfully completed 50 Room Rushes
Collected 10,000 Caps
Leveled up a dweller from Level 1 to 10
Merged 3 Water Rooms
Merged 3 Power Rooms
Merged 3 Food Rooms
Collected 1,000 Caps
Collect 20 Legendary Dwellers