Successfully complete one of the following tasks to get a trophy:

Tanks Very Much (Silver): Achieve level 10 as and gain the Tank Role.
The Healing Touch (Silver): Achieve level 10 as and gain the Healer Role.
The Queen's Favorite (Gold): Achieve level 30 as a villain mentored by Circe.
Criminal Mastermind (Gold): Achieve level 30 as a hero mentored by Lex Luthor.
The Joker in the Deck (Gold): Achieve level 30 as a villain mentored by the Joker.
Knight for Justice (Gold): Achieve level 30 as a hero mentored by Batman.
Warrior of Truth (Gold): Achieve level 30 as a hero mentored by Wonder Woman.
Champion of Earth (Gold): Achieve level 30 as a hero mentored by Superman.
Acrobatic Ace (Gold): Achieve level 30 as an acrobat.
Fearless Flier (Gold): Achieve level 30 as a flier.
Speedster Supreme (Gold): Achieve level 30 as a speedster.
Platinum Pace (Gold): Earn a platinum medal in any race.
Platinum Trophy (Platinum): Earn every other trophy in the game.