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