While this trophy will appear through natural story progression and doesn't really need a guide, it's worth pointing out which mission will trigger the end of the Chapter in case you need to mop up some missable activities for other trophies, some of which are limited to specific chapters.
*** Spoiler - click to reveal ***While the circumstances that lead to the end of Chapter 2 kick off during The Sheep and the Goats, the journey to Chapter 3 doesn't officially start until you speak to Dutch at camp for the mission A Strange Kindness.