Full list of all 85 Mafia III achievements. It takes around 60-80 hours to unlock all of the achievements in the base game on Windows.
The base game contains 55 achievements, and there are 5 DLC packs containing 30 achievements.
Decided Lincoln's fate
Made 10 enemies kill themselves with their own Molotovs
You have avenged Sammy and Ellis
Completed all of Burke's side-missions
Reached the Loyal state with all three Underbosses
Kept all Underbosses alive until "Yet Here We Are"
Completed all of Vito's side-missions
You jammed a knife through Santangelo's head
Completed all of Cassandra's side-missions
Flipped 16 Racket Bosses
Recruited 15 Racket Informants
Unlocked all Associates
Spent at least $500,000
Got the maximum earn from one of your Rackets
Earned $500,000
Received $10,000 in earn from one Underboss
Kept only one Underboss alive until "Yet Here We Are"
You left Olivia Marcano to her fate
You burned Remy Duvall on a cross
Killed all of the Racket Bosses
While driving, performed a 50-meter jump and landed on your wheels
Escaped a Police Zone after being chased for 2 minutes
Tommy Marcano was burned beyond recognition
Performed 5 headshots in 5 seconds
You helped Alvarez escape
Got eaten by an alligator
Fed a body to an alligator
You helped Enzo escape
Killed an enemy within 2 seconds of kicking open a door
Performed 50 Brutal Takedowns
Killed 15 Racket Informants
Saved $150,000 between your wallet and the bank
Reached the Loyal state with one Underboss
You chased down and killed Frank Pagani
Killed 300 enemies using Takedowns
You gutted Lou Marcano like a catfish
Drove at 120 mph or faster for 20 seconds
While driving, drifted for at least 5 seconds
Made a 180 degree turn at high speed without hitting anything
You killed Judge Holden
Executed 10 Vehicle Takedowns
Stole a Police car
Chained together 3 or more Brutal Takedowns
You tossed Derazio out his penthouse window
You turned the Butcher over to Burke
Performed 100 Stealth Takedowns on enemies
You helped Vito capture Michael Grecco
Attacked a Racket without killing any Enforcers
Vito agreed to help you kill Marcano
Burke agreed to help you kill Marcano
You hung Ritchie Doucet from a Ferris wheel
Completely weakened a Racket by killing all of its Enforcers
Wiretapped the Delray Hollow Smack Racket
Cassandra agreed to help you kill Marcano
You collected your things from Sammy's
Fully upgraded the Grow House
Reached the Max Herbalism level
Sold a single batch of weed for $10,000 or more
Destroyed 10 of Slim's re-election billboards
Successfully triggered 10 Vehicle Traps
You helped Irma, Jeremiah, and Christian
You captured Slim Beaumont
You helped MJ and Roxy get the Witnesses free
You survived the drive into Sinclair Parish
Killed 30 enemies using Proximity Mines
Killed 50 enemies using the Hartmann 7.62mm and wearing the Party Animal outfit
Knocked out 30 people with the Dart Gun
Completed all Bounty Hunting assignments
You secured the nuke
You helped Donovan end Connor Aldridge
You got a hot tip on a loose nuke
You survived the trip to Boicherot's
Killed 30 Enemies Using Sniper Support
You investigated the scene
Placed an unconscious person in the trunk of a car
Drove a distance of 50 km in the Samson Harrier
Fully renovated Sammy's
Protected Sammy's from the Dixie Mafia
Began Sammy's Renovation
You killed Bonnie Harless
Investigated the 3 "Places of Darkness"
Killed 20 enemies using Throwing Knives
You met Bonnie Harless
You investigated the cult's activities at Sammy's
Killed 4 enemies using Slow-Mo Shooting 10 Times