Full list of all 84 Fallout 4 achievements. It takes around 80-100 hours to unlock all of the achievements in the base game on Windows.
The base game contains 50 achievements, and there are 6 DLC packs containing 34 achievements.
Complete "Ad Victoriam"
Reach Maximum Relationship Level with a Companion
Complete "Blind Betrayal"
Complete "Rockets' Red Glare"
Complete "Underground Undercover"
Complete "The Nuclear Option"
Complete "Nuclear Family"
Decide the Fate of the Commonwealth
Complete "Powering Up"
Complete "Mankind-Redefined"
Complete "Institutionalized"
Complete "The Molecular Level"
Enter The Wasteland
Reach Maximum Happiness in a Large Settlement
Complete 50 Misc. Objectives
Reach Level 50
Kill 5 Giant Creatures
Hack 50 Terminals
Collect 20 Vault-Tec Bobbleheads
Placed A Grenade Or Mine While Pickpocketing
Collect 10 Vault-Tec Bobbleheads
Create 50 Weapon Mods
Get a Homerun
Complete "Hunter/Hunted"
Kill 300 People
Read 20 Magazines
Complete 10 Side Quests
Craft 100 Items
Complete "Dangerous Minds"
Recruit 5 Separate Companions
Reach Level 25
Complete "Old Guns"
Complete "Reunions"
Kill 300 Creatures
Discover 100 Locations
Pick 50 Locks
Build 100 Workshop Items
Complete "Taking Independence"
Join the Brotherhood of Steel
Join the Railroad
Complete "Unlikely Valentine"
Gather 1000 Resources Used For Crafting
Ally with 3 Settlements
Reach Level 10
Get a Touchdown
Play a Holotape Game
Complete "Sanctuary"
Join the Minutemen
Reach Level 5
Complete "When Freedom Calls"
Complete "Restoring Order"
Complete "Headhunting"
Build 10 Robot Mods
Unlock 10 Robot Mods
Complete "Mechanical Menace"
Build One of Every Cage Type
Have 5 Tamed Creatures in a Settlement
Start a Spectated Arena Fight in a Settlement
Complete the quest "Close to Home"
Complete the quest "Cleansing the Land"
Complete the quest "The Way Life Should Be"
Collect all issues of "The Islander's Almanac" magazine
Defeat 30 Far Harbor Sea Creatures
Complete the quest "Where You Belong"
Discover 20 Far Harbor Locations
Unlock 3 Far Harbor Workshop Locations
Cook One of the New Far Harbor Recipes
Complete the quest "Far From Home"
Become Overseer
Equip Vault 88 suit and Pip-boy on a settler
Unlock all build areas of Vault 88
Produce 100 objects from your builders
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
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 "Home Sweet Home"
Complete "Power Play"
Collect every issue of Scav! Magazine
Complete 12 quests for any Nuka-World Raider Gangs
Complete "The Grand Tour"
Complete "Taken for a Ride"