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