Here is the full list of all 37 One Piece: Pirate Warriors trophies - there are 20 bronze, 13 silver, 3 gold and 1 platinum.
All Trophies acquired!
Successfully performed an event attack on Aokiji.
Defeated a total of more than 100,000 enemies.
Completed Marineford just as it happened in the original story.
Activated all skills.
Defeated 1000 enemies in a single Episode for the first time!
Completed the Jimbei story in Another Log.
Completed the Ace story in Another Log.
Completed the Sanji story in Another Log.
Completed the Hancock story in Another Log.
Completed the Brook story in Another Log.
Completed the Franky story in Another Log.
Completed the Robin story in Another Log.
Collected all the coins featuring members of the Navy.
Completed the Usopp story in Another Log.
Completed the Whitebeard story in Another Log.
Completed the Chopper story in Another Log.
Collected all the coins featuring the Straw Hat Pirates.
Completed the Nami story in Another Log.
Completed the Zoro story in Another Log.
Cleared the Main Log.
Successfully performed an event attack on Akainu.
Collected all the coins featuring powerful enemies.
Successfully performed an event attack on Lucci.
Retried an Episode.
Successfully performed an event attack on Bruno.
Successfully performed an event attack on Crocodile.
Fell into the water or off platforms 10 times.
Activated your first skill.
Successfully performed an event attack on Arlong.
Successfully performed an event attack on Don Krieg.
Performed your first Crew Strike.
Stunned an enemy for the first time by attacking their weak point.
Successfully performed an event attack on Buggy.
Cleared the first stage.
Successfully performed an event attack on a Pacifista.
Successfully completed your first action with Luffy.