Deus Ex: Mankind Divided Achievement/Trophy Guide - Golden Ticket (Free Roam)
To get the Golden Ticket Trophy/Achievement, you must first activate the side quest which you can do by following the waypoint marker to KOLLER and his bookstore when you regain control of Jenson in his apartment building.
You will be stopped at a checkpoint by a cop named 'Drahomir', and a series of dialogue choices will play out. I Recommend choosing the following: Cooperate, Play Along & Accept. You will then be tasked with finding the document agent who is just around the corner from Drahomir. He will ask that you pay him 35,000 Credits (extortion at its best right?), but you can simply confront him and say that you'll find another way in by choosing the sneak around option.
When you gain control of Jenson again, turn around and climb the ladder then follow the path to break into the compound. You will then have to sneak past a set of security lasers, cameras and deal with the guard upstairs. After doing all this activate the terminal and open the vault door then talk to Melina who is in the next room.
Melina will tell you that she has been taken hostage, and she requires your help to deliver two documents so when able choose the Inquire, and I Want To Help options and you'll need to deliver the two documents now.
On your way to the first waypoint you will see three police officers so talk to one of them and tell them what Drahomir has been doing. This will now spark a gunfight in the middle of the street so simply walk into the theater and drop off the first document. Follow the objective waypoint to Edwards shop and deal with the thug to deliver the second document.
Now you must make your way to Cista CTVRT and activate the passes. To get into the building simply walk around the side of it, jump on the car and through the grate above your head. Interact with the terminal and activate the station and choose who you want to help, this will be the point your achievement/trophy unlocks.
I have included a video below,