Here is the full list of all 67 Mafia II: Definitive Edition achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Find all of the Playboy magazines
Kill 50 enemies
Drive at least 30 different vehicles
Kill 5 enemies in rapid succession with a headshot
Sell 5 vehicles to Mike Bruski at the scrapyard
Kill a total of 30 enemies using melee attacks
Sell 5 vehicles to Derek at the dock
Kill 1,000 enemies in "Jimmy's Vendetta."
Earn 1,000,000 points in "Jimmy's Vendetta."
Destroy 100 vehicles in "Jimmy’s Vendetta."
Kill 100 enemies by headshots in "Jimmy's Vendetta."
Finish all Car Dealer missions in "Jimmy's Vendetta."
Finish "Jimmy's Vendetta" on any difficulty level.
Achieve a 10x point multiplier in "Jimmy's Vendetta."
Kill your enemies in "Jimmy's Vendetta" with every weapon available in the game.
Reach 10 different score actions in one mission in "Joe's Adventures."
Reach 200 points for one Jump in "Joe's Adventures."
Reach 2000 points for one velocity run in "Joe's Adventures."
Complete your first mission in "Jimmy's Vendetta."
Finish Joe's Adventures on any difficulty.
Finish the Cathouse level in "Joe's Adventures."
Finish the Supermarket level in "Joe's Adventures."
Finish the Connection level in "Joe's Adventures."
Reach 200 points for one Drift in "Joe's Adventures."
Finish the Witness level in "Joe's Adventures."
Push the chief witness into the ice lake in "Joe's Adventures."
Finish what you started
Finish the story on Medium difficulty level or higher
Finish the story on Hard difficulty level
Complete Chapter 14
Learn what it means to be a Scaletta
Pay a visit to an old friend
Complete Chapter 13
The police want you dead. Survive for 10 minutes.
Complete Chapter 12
Rob 5 stores in under 5 minutes
Complete Chapter 11
Settle the score with the Irish once and for all
Help Leo out of a tricky situation without getting caught
Complete Chapter 10
Clean up after Joe
Travel a total of 50 miles in one vehicle
Complete Chapter 9
Upgrade one your cars to the maximum level
Complete Chapter 8
Complete Chapter 7
Complete Chapter 6
Complete Chapter 5
Get all wheels of your car in the air for atleast 20 meters and then touch the ground again
Show that you know how to treat a lady
Complete Chapter 4
Complete Chapter 3
Sell all the gas stamps before the time runs out
Obtain the ration stamps without raising the alarm
Buy your first luxury suit
Travel at 125mph
Upgrade one of your cars one level
Improve the dockworkers' haircuts
Keep any vehicle at 30mpg or over for 5 or more minutes
Complete Chapter 2
Do your first job for Mike Bruski
Find at least one collectible in the game
Help the woman fix her car in Home Sweet Home
Protect Francesca
Complete Chapter 1
Find all of the wanted posters
Drive a total of 1,000 miles in vehicles in "Jimmy's Vendetta."