In order to obtain this Trophy you must proceed through the game until you finish Chapter 1.
Chapter 1: Departure requires 6 main quests to be completed before being completed.
The Pauper Prince
Hunter Becomes the Hunted
The Mutant Marauder
The Errand Prince
A Gentleman's Agreement
Ill Tidings
Upon finishing the sixth main quest of Chapter 1 you will unlock this Trophy.