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