Here is the full list of all 35 Fallout Shelter trophies - there are 20 bronze, 10 silver, 4 gold and 1 platinum.
Collect all other 34 Trophies for this Trophy.
Collect 20 Legendary Outfits
Build 1 of every room type
Collect 20 Legendary Weapons
Complete 100 Quests
Successfully stop 50 Raider Attacks
Craft every Theme
Change the appearance of 10 Dwellers in the Barbershop
Make 25 Babies
Scrap 500 items
Collect all Fragments of 4 Theme Recipes
Complete 100 objectives
Complete 60 Quests
Craft an Outfit, a Weapon, and a Theme
Build 50 rooms
Upgrade 20 Rooms to Level 3
Merge 3 Food Rooms
Merge 3 Water Rooms
Craft 10 Outfits
Collect 100 Stimpaks and 100 RadAway on Quests
Collect all Fragments of a Theme Recipe
Make 25 Dialogue Choices on Quests
Level up a Dweller from Level 1 to 50
Complete 30 Quests
Kill 500 enemies on Quests
Craft 10 Weapons
Successfully complete 50 Room Rushes
Complete 10 Quests
Build 25 rooms
Kill 10 Quest Bosses
Level up a dweller from Level 1 to 25
Collect 10,000 Caps
Level up a dweller from Level 1 to 10
Collect 1000 caps
Merge 3 Power Rooms