The Jimmy's Vendetta Add-on for Mafia II has 10 achievements worth 250 gamerscore.
Complete your first mission in "Jimmy's Vendetta."
Achieve a 10x point multiplier in "Jimmy's Vendetta."
Drive a total of 1,000 miles in vehicles in "Jimmy's Vendetta."
Kill your enemies in "Jimmy's Vendetta" with every weapon available in the game.
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.
Earn 1,000,000 points in "Jimmy's Vendetta."
Kill 1,000 enemies in "Jimmy's Vendetta."