Full list of all 72 Fallout 76 achievements worth 1,580 gamerscore. It takes around 80-100 hours to unlock all of the achievements in the base game on Xbox One.
The base game contains 50 achievements worth 1,000 Gamerscore, and there are 5 DLC packs containing 22 achievements worth 580 Gamerscore.
Be at Ground Zero of a Nuclear Blast
Win the "Breach and Clear" Event
Complete "Heart of the Enemy"
Complete "Queen of the Hunt"
Complete "One of Us"
Complete "Bunker Buster"
Possess 10,000 Caps
Take 20 Photos
Kill 20 Players
Complete "Coming to Fruition"
Pick 50 Locks
Win the "Scorched Earth" Event
Complete "Recruitment Blues"
Complete "Key to the Past"
Discover 100 Locations
Reach Level 25
Complete "Into the Fire"
Build 100 C.A.M.P. Items
Kill 5 Giant Creatures
Join 20 Teams
Kill 300 Creatures
Complete "Final Departure"
Complete "Second Helpings"
Complete "First Contact"
Complete "Personal Matters"
Collect a Bobblehead
Build 20 C.A.M.P. Items
Fully Rank Up one Perk
Reach Level 10
Kill a Wanted Player
Kill Another Player
Craft 5 Pieces of Armor
Play a Holotape Game
Complete 20 Challenges
Build a C.A.M.P.
Craft a Weapon
Gather 200 Pieces of Junk
Complete 5 Challenges
Leave Vault 76
Complete "Officer on Deck"
Complete "Mistress of Mystery"
Complete the "Monster Mash" Event
Reach Level 100
Read 20 Magazines
Hack 50 Terminals
Mod 50 Weapons
Revive 20 Fallen Players
Collect 10 Bobbleheads
Reach Level 50
Complete "I Am Become Death"
Gain 300 gold bullion
Complete "All That Glitters"
Find the Overseer
Complete "The Elusive Crane"
Complete "Buried Treasure"
Complete Sofia's story
Complete Beckett's story
Become allies with Foundation
Become allies with Crater
Gain 1500 gold bullion
Complete “The Catalyst”
Earn Elder Rewards from a Daily Op
Craft a 1 star legendary mod, a 2 star legendary mod, and a 3 star legendary mod
Lead and complete "Union Dues" and "From Ashes to Fire"
Complete 10 Favors for people in The Whitespring Refuge
Kill 100 Trogs with an Auto Axe
Lead and complete “Tax Evasion” and “The Most Sensational Game”
Kill 10 Lesser Devils with a melee weapon.
Build 5 casino games in your CAMP.
Lead and Complete "The Human Condition"
Complete "Sins of the Father"
Kill 100 Overgrown with fire