Here is the full list of all 12 Rag Doll Kung Fu: Fists of Plastic trophies - there are 7 bronze, 4 silver and 1 gold.
Swing from one place to another and damage an opponent in between
Throw the fish to a team-mate who then scores within one second
Defeat an opponent who is Grabbed by your team-mate
Hit an airborne player with three consecutive Lightning Balls
Hit an opponent in the air with all three special attacks before the opponent lands
Earn Gold on all challenges
Earn Silver on all challenges
Earn Bronze on all challenges
Play all four Multiplayer Game Modes
Score a goal by shooting the fish into the basket with a Lightning Ball
Damage three opponents with a single attack
Execute every motion sensor-based move