Full list of all 84 Fallout 4 achievements worth 1,600 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 6 DLC packs containing 34 achievements worth 600 Gamerscore.
Kill 5 Giant Creatures
Complete 50 Misc. Objectives
Get a Homerun
Create 50 Weapon Mods
Complete "The Nuclear Option"
Decide the Fate of the Commonwealth
Complete "Ad Victoriam"
Reach Level 50
Complete "Mankind-Redefined"
Complete "Blind Betrayal"
Complete "Institutionalized"
Complete "The Molecular Level"
Complete "Hunter/Hunted"
Hack 50 Terminals
Kill 300 People
Join the Railroad
Complete 10 Side Quests
Complete "Dangerous Minds"
Complete "Reunions"
Recruit 5 Separate Companions
Reach Maximum Relationship Level with a Companion
Reach Level 25
Read 20 Magazines
Craft 100 Items
Discover 100 Locations
Kill 300 Creatures
Pick 50 Locks
Complete "Unlikely Valentine"
Complete "Old Guns"
Get a Touchdown
Ally with 3 Settlements
Complete "Taking Independence"
Gather 1000 Resources Used For Crafting
Reach Level 10
Join the Brotherhood of Steel
Complete "Sanctuary"
Build 100 Workshop Items
Join the Minutemen
Reach Level 5
Complete "When Freedom Calls"
Enter The Wasteland
Play a Holotape Game
Complete "Powering Up"
Complete "Nuclear Family"
Complete "Underground Undercover"
Complete "Rockets' Red Glare"
Reach Maximum Happiness in a Large Settlement
Placed A Grenade Or Mine While Pickpocketing
Collect 10 Vault-Tec Bobbleheads
Collect 20 Vault-Tec Bobbleheads
Complete "Mechanical Menace"
Complete "Headhunting"
Complete "Restoring Order"
Unlock 10 Robot Mods
Build 10 Robot Mods
Have 5 Tamed Creatures in a Settlement
Start a Spectated Arena Fight in a Settlement
Build One of Every Cage Type
Complete the quest "Far From Home"
Complete the quest "Where You Belong"
Complete the quest "The Way Life Should Be"
Complete the quest "Cleansing the Land"
Complete the quest "Close to Home"
Collect all issues of "The Islander's Almanac" magazine
Defeat 30 Far Harbor Sea Creatures
Discover 20 Far Harbor Locations
Unlock 3 Far Harbor Workshop Locations
Cook One of the New Far Harbor Recipes
Display a weapon on a weapon rack, armor on an armor rack, and power armor in a power armor display.
Assign a settler to a pillory
Produce 100 objects from your builders
Become Overseer
Unlock all Vault 88 build areas
Equip Vault 88 suit and Pip-Boy on a settler
Complete 12 quests for any Nuka-World Raider Gangs
Collect every issue of Scav! Magazine
Create 20 different flavors of Nuka-Cola
Establish 8 Raider Camps in the Commonwealth
Defeat 40 Nuka-World Creatures while under the effect of any Nuka-Mix flavor
Redeem 100,000 tickets at the Nuka-Cade
Complete "Taken for a Ride"
Complete "The Grand Tour"
Complete "Home Sweet Home"
Complete "Power Play"