Objective: Meet Damien at the plaza
Objective: Reach Nickys house
Objective: Get to the train station where Jackson is located
Objective: Hack the train undetected to get Jackson away safely

Get to Nickys house and watch the cutscene, then get your over to the train station to pick up Jackson. At the station youll need to hack the camera in the middle and direct it out the window of the train and hack the only two hack points visible. This will get the train moving.

Objective: Take down the fixers before they reach Jackson
Objective: Eliminate the remaining fixers
Objective: Board the L-Train and find Jackson

Once the train is moving get back to your car and go to the next waypoint. There are two fixers in cars who want Jackson, so youll need to take care of them and the back-up fixers they call in. And easy technique is to get out of the car and use it for cover as you deal with the fixers using your guns. Once all the fixers have been dealth with get to the L-train to complete the mission.