IMPORTANT-get all trophies first, with the quiz writers' being the exception.
delete game save or move it to a jump drive.start a brand new save data. Start a STANDARD game with 4 controllers using 4 different characters. Start another game when finished, using the loadouts you made in the first game. Choose the same characters, BUT select the next outfit by pressing up for each character. finish game and repeat.
Next set of three games, use the same load out, BUT choose different characters, then choose different outfits.
Do all this 1 more time for a total of 12 characters(i think there are 12LOL) x3 outfits each.
ALL STANDARD GAMES! Just to be safe!!
After 2 or 3 hours trophy is yours! DrThug, send me a message on the network if you need anymore help.