The description of this trophy may confuse you thinking you need to play a 4 person local multiplayer game. It should say "Play a 2, 3, OR 4 player split screen local game". That OR is important, as you can get this with just 2 controllers. If you only have one controller, ask to borrow a friend's or get another one. Then simply play a local split screen game and this will pop after the game is over.