Dealing Revenge follows the Slacker mission. The hapless dealer you returned to Chinatown has been whacked and Vincenzo tells you to enact some revenge.
This mission introduces you to the basics of combat. If you’ve already picked up some free weaponry then it’s not a fair fight, but you can just use your fists and a few presses on the attack button should win the fight.
Then it’s a case of taking out two more Sindacco’s, neither of whom are armed. You can use a car and run them over or just your fists.