The Left Behind Add-on for The Last of Us (PS3) has 10 trophies - 9 bronze and 1 silver.
Finish Left Behind on Easy
Finish Left Behind on Normal
Finish Left Behind on Hard
Finish Left Behind on Survivor
All Left Behind collectibles found
Defeat Black Fang without getting hit
Played Jak X Combat Racing
All optional conversations found in Left Behind
Win the brick throwing contest
Win the water gun fight