Here is the full list of all 30 River City Girls trophies - there are 16 bronze, 6 silver, 7 gold and 1 platinum.
Obtain all trophies in "River City Girls".
Reach 100% completion.
Reached Max Level.
That wasn't very nice!
Catch a dodgeball thrown by your ally.
Complete the game in Co-Op.
Completed the game with a secret character.
K.O. the secret boss.
Destroyed all Sabu statues.
Completed the game on Hard.
Parry 10 enemy attacks.
Catch a boomerang.
Completed all of Godai's quests.
Collected $5000
K.O. Sabuko.
Enter the Penthouse.
K.O. Noize.
Defeated an enemy with a fish.
K.O. Abobo.
Find the keys in the junk yard.
K.O. Hibari.
Obtain an item from the Pawn Shop.
K.O. Yamada.
Enter the Mall.
Defeated an enemy by hitting them with another enemy.
K.O. Misuzu.
Equip a new outfit.
Destroy a vending machine.
Was defeated in detention.
Attacked Mr. Rudis.