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