Necronopticous and I have been doing shared-controller challenges (he controls the left side of the controller, and I control the right side). We're currently playing Bloodborne in this way (specifically the DLC because we've already played the pre-existing game in this way). Our chat is lonely, so GET OVER HERE! Will be streaming again tonight shortly.

http://twitch.tv/jumplust

Edit: Tonight we beat what seems like the hardest boss in the game so far while sharing the controller (http://www.twitch.tv/jumplust/c/7038834).