You see, Red Dead Redemption 2 wisely built most of its side quests so that John Marston could complete them, even after Arthur dies in the campaign. “Years ago a friend of mine helped you retrieve your horse%u2026 you became friends.” “Oh, yeah, Arthur. Yeah.” But there are some quests that are meant for Arthur only %u2014 specifically, the ones that take place while the gang is hiding out at various camp sites throughout the story. When the location of camp moves, these quests disappear, and they can no longer be played again unless you start an entirely new story playthrough.