Complete the following tasks to unlock PlayStation 4 trophy rewards.

Trophy	How to unlock
BFFs (Bronze)	All optional conversations found in Left Behind.
Don't Go - Easy (Bronze)	Finish Left Behind on Easy.
Don't Go - Hard (Bronze)	Finish Left Behind on Hard.
Don't Go - Normal (Bronze)	Finish Left Behind on Normal.
Don't Go - Survivor (Silver)	Finish Left Behind on Survivor.
Picked Clean (Bronze)	All Left Behind collectibles found.