Share it if you LIKE it :). Chapter 18 - Brother Keeper. In this video of Uncharted 4 Gameplay/Walkthrough, Sam couldn't resists himself from the treasure's obsession. He went towards the treasure location, Nathan followed him to save, Elena and Sully insisted so too. Uncharted 4: A Thief's End is an action-adventure third-person shooter platform video game developed by Naughty Dog and published by Sony Interactive Entertainment for the PlayStation 4 video game console. My Facebook -.