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.
Kill 50 enemies
Drive a total of 1,000 miles in vehicles in "Jimmy's Vendetta."
Find all of the wanted posters
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 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."
Finish "Jimmy's Vendetta" on any difficulty level.
Finish all Car Dealer missions in "Jimmy's Vendetta."
Kill 100 enemies by headshots in "Jimmy's Vendetta."
Achieve a 10x point multiplier in "Jimmy's Vendetta."
Complete your first mission in "Jimmy's Vendetta."
Reach 200 points for one Jump in "Joe's Adventures."
Reach 2000 points for one velocity run in "Joe's Adventures."
Finish Joe's Adventures on any difficulty.
Finish the Cathouse level in "Joe's Adventures."
Reach 200 points for one Drift in "Joe's Adventures."
Finish the Supermarket level in "Joe's Adventures."
Finish the Connection level in "Joe's Adventures."
Push the chief witness into the ice lake in "Joe's Adventures."
Finish the Witness level in "Joe's Adventures."
Rob 5 stores in under 5 minutes
The police want you dead. Survive for 10 minutes.
Drive at least 30 different vehicles
Sell 5 vehicles to Derek at the dock
Travel a total of 50 miles in one vehicle
Find all of the Playboy magazines
Sell 5 vehicles to Mike Bruski at the scrapyard
Help the woman fix her car in Home Sweet Home
Kill a total of 30 enemies using melee attacks
Keep any vehicle at 30mpg or over for 5 or more minutes
Buy your first luxury suit
Settle the score with the Irish once and for all
Help Leo out of a tricky situation without getting caught
Travel at 125mph
Upgrade one your cars to the maximum level
Upgrade one of your cars one level
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
Complete Chapter 12
Complete Chapter 11
Complete Chapter 10
Clean up after Joe
Complete Chapter 9
Complete Chapter 8
Complete Chapter 7
Complete Chapter 6
Complete Chapter 5
Kill 5 enemies in rapid succession with a headshot
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
Get all wheels of your car in the air for atleast 20 meters and then touch the ground again
Obtain the ration stamps without raising the alarm
Improve the dockworkers' haircuts
Complete Chapter 2
Do your first job for Mike Bruski
Find at least one collectible in the game
Protect Francesca
Complete Chapter 1