After taking over two rackets in this district, talk to Burke to discuss the plans about the Butcher. This time will be different; Barbieri will be bringing the fight to you. After the cutscene, take position in the rooftop.
Take note that the wooden covers are destructible so don’t hang in there too long. Several of Barbieri’s men will arrive in cars. If you time it correctly, you can shoot the explosive barrels as soon as the enemies drive near them. This will allow you to destroy all of them immediately. Nicki will provide spotlight support while Burke will be providing sniper cover. However, you still need to do most of the things yourself.
After killing much of his men, the Butcher himself will arrive. Take out his men first so you can focus on disabling him. He’s one tough nut to kill so you may need to go down the rooftop and confront him up close. Make sure you have the right gun for the job. After disabling him, press square to trigger the cutscene and complete the mission.
Completing the mission will give the control of Pointe Verdun back to Burke. The Pinkerton Titan vehicle becomes available in the Car Delivery service as well.