1. Unpack release
2. Mount image or burn it
4. Choose Jimmy's Vendetta from the main menu.
5. Play the game
This DLC require Mafia.II.Update.1-SKIDROW installed
If you encounter problems after completing the Tutorial, then
delete your newly created save files(there are seperate files
for this DLC expansion pack) and start the game again. Should
fix your problems, as the problem isn't crack related.
Problem is described here: