Legend of the Guardians: The Owls of Ga'hoole

You will unlock battlesets as you progress through the story and complete missions. Once unlocked, you must purchase the battlesets with your shinies. Upon purchase, you may equip the battlesets to enhance certain attributes for your owls. For this specific trophy, you have unlock and wear four different battlesets while playing the mission. In particular, you must actually play a mission with the different battlesets equipped in order for the trophy to unlock.