Road Trip Trophy
Win a game with an AFL team against an interstate AFL team at their home ground.
The easiest way to unlock this trophy is to start a Single Match, move your controller symbol to the right so you are the "Away" team. Choose a quality side from Victoria (i.e. Collingwood) and make the opposition the Gold Coast Suns, make sure the stadium selected is Gold Coast Stadium. Win the match and the trophy will unlock.
The trophy may not unlock if you have messed around in the Footy Factory game mode and removed players from teams. If this is happens to you, go to "Footy Factory" and delete any custom teams you have made. Then go down to "Reset Teams" and confirm that you want to restore the players to their original teams. Play a match using the above settings and it should unlock.