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.
Leveled up a dweller from Level 1 to 25
Successfully completed 50 Room Rushes
Killed 10 Quest Bosses
Built 25 rooms
Leveled up a dweller from Level 1 to 10
Collected 10,000 Caps
Merged 3 Water Rooms
Merged 3 Food Rooms
Collected 1,000 Caps
Merged 3 Power Rooms
Build 50 rooms
Level up a Dweller from Level 1 to 50
Build 1 of every room type
Collect 20 Legendary Weapons
Collect 20 Legendary Outfits
Collect 20 Legendary Dwellers
Successfully stop 50 Raider Attacks
Complete 100 objectives
Make 25 Babies
Upgrade 20 Rooms to Level 3
Make 25 dialogue choices on Quests
Complete 10 Quests
Complete 30 Quests
Complete 60 Quests
Complete 100 Quests
Collect all Fragments of a Theme Recipe
Collect all Fragments of 4 Theme Recipes
Craft every Theme
Kill 500 enemies on Quests
Collect 100 Stimpaks and 100 RadAway on Quests
Scrap 500 items
Craft 10 Weapons
Craft 10 Outfits
Craft an Outfit, a Weapon and a Theme
Change the appearance of 10 Dwellers in the Barbershop