This is why Mafia 2 had so little content.
Mafia 2 was a good game that suffered from a lack of content, yes the story was good but it had to be because there was absolutely nothing else to do in the game. You may wonder how on earth they took 8 years to develop a game that lasts 8 hours? Welcome to Jimmy's Vendetta, some of the content that was stripped from the original game so they could sell you it as DLC. PC gamers who have access to the games files know that what we were sold as a full game was in fact a stripped down version, the rest of the game including elements of the story will be sold as DLC. Just checkout http://mafia2removedfeatures.wikia.com/wiki/Real_Mafia_2_Wiki to see just how much content has been ripped from the game.
The DLC itself is poor, the missions themselves are just side missions with a timer added just for extra annoyance. You score points arcade style for various things and these go up onto a leaderboard. Drive here, blow that up/kill that person, drive back, rinse and repeat. They haven't even bothered changing anything for Jimmy, he lives in the same apartments as Vito, he doesn't even have his own body, they've put his head on Vitos's body without bothering to change the textures so the head and body match. This DLC is a rip off, they are charging us money for what should already be in the game. Knowing what I know now I wouldn't bother with this if it was free, I sure as hell wouldn't recommend anyone pay for this garbage.