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.
Kill 5 Giant Creatures
Complete "The Nuclear Option"
Decide the Fate of the Commonwealth
Complete "Rockets' Red Glare"
Complete "Underground Undercover"
Complete "Powering Up"
Complete "Mankind-Redefined"
Join the Railroad
Complete 50 Misc. Objectives
Complete "Institutionalized"
Complete "The Molecular Level"
Complete "Hunter/Hunted"
Complete "Dangerous Minds"
Reach Maximum Relationship Level with a Companion
Get a Homerun
Complete "Old Guns"
Collect 20 Vault-Tec Bobbleheads
Collect 10 Vault-Tec Bobbleheads
Complete "Reunions"
Recruit 5 Separate Companions
Complete 10 Side Quests
Complete "Taking Independence"
Join the Brotherhood of Steel
Complete "Unlikely Valentine"
Kill 300 People
Placed A Grenade Or Mine While Pickpocketing
Discover 100 Locations
Kill 300 Creatures
Read 20 Magazines
Get a Touchdown
Reach Level 50
Pick 50 Locks
Reach Level 25
Ally with 3 Settlements
Create 50 Weapon Mods
Craft 100 Items
Join the Minutemen
Reach Level 10
Build 100 Workshop Items
Gather 1000 Resources Used For Crafting
Complete "Sanctuary"
Complete "When Freedom Calls"
Reach Level 5
Enter The Wasteland
Play a Holotape Game
Complete "Nuclear Family"
Complete "Blind Betrayal"
Complete "Ad Victoriam"
Reach Maximum Happiness in a Large Settlement
Hack 50 Terminals
Complete "Restoring Order"
Complete "Headhunting"
Unlock 10 Robot Mods
Complete "Mechanical Menace"
Build 10 Robot Mods
Build One of Every Cage Type
Have 5 Tamed Creatures in a Settlement
Start a Spectated Arena Fight in a Settlement
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
Become Overseer
Unlock all build areas of Vault 88
Equip Vault 88 suit and Pip-boy on a settler
Assign a settler to a pillory
Display a weapon on a weapon rack, armor on an armor rack, and power armor in a power armor display
Produce 100 objects from your builders
Complete "Taken for a Ride"
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 "The Grand Tour"
Complete "Home Sweet Home"
Complete "Power Play"