Complete order number 70There are 15 episodes.
This is the final storyline trophy. 15 is when it turns into a free for all open world section.
This unlocks after you leave the incinerator OR the final cutscene. It seems to unlock at different places for different people.
This is a single mission chapter.
*** Spoiler - click to reveal ***Take Lou to the incinerator after completing episode 13. The rest is repatriate mode that explains the missing parts of Clifford Ungars story. Once you leave the incinerator the story is over. The trophy should unlock here. It may unlock at the cutscene with Louise.