Here is the full list of all 51 KINGDOM HEARTS II FINAL MIX trophies - there are 40 bronze, 8 silver, 2 gold and 1 platinum.
Obtain all blueprints.
Obtain an S rank on a gummi ship EX mission for all routes.
Obtain an S rank on a gummi ship mission for all routes.
Obtain an S rank on a gummi ship mission.
Clear the game and watch the ending sequence.
Defeat Sephiroth.
Win the Hades Paradox Cup.
Win the Titan Paradox Cup.
Win the Cerberus Paradox Cup.
Win the Pain and Panic Paradox Cup.
Win the Goddess of Fate Cup.
Get Sora to Level 99.
Win by obtaining all of the opponent's orbs.
Obtain 5,000 points with skateboard tricks.
Collect all Maps in Jiminy's Journal.
Complete all Puzzles in Jiminy's Journal.
Complete the Atlantica episodes.
Win the Titan Cup.
Collect all Ansem Reports in Jiminy's Journal.
Collect all Nobody entries in Jiminy's Journal.
Reunite with Riku and Kairi.
Complete the Twilight Town episodes.
Complete the Space Paranoids episodes.
Complete the Pride Lands episodes.
Complete the Halloween Town episodes.
Complete the 100 Acre Wood episode.
Complete the Agrabah episodes.
Complete the Port Royal episodes.
Complete the Olympus Coliseum episodes.
Win the Cerberus Cup.
Complete the Beast's Castle episodes.
Complete the Land of Dragons episodes.
Win the Pain and Panic Cup.
Complete the Timeless River episode.
Get rescued by the King.
Complete Roxas's episode.
Obtain all trophies.
Clear game on Critical.
Clear game on Proud Mode or a higher difficulty level.
Defeat the Lingering Will.
Defeat all Organization XIII Replica Data.
Satisfy every member of Mushroom XIII.
Collect all Character entries in Jiminy's Journal.
Collect all Heartless entries in Jiminy's Journal.
Collect all Treasures in Jiminy's Journal.
Collect all Mission entries in Jiminy's Journal.
Collect all Minigame entries in Jiminy's Journal.
Collect all Limit entries in Jiminy's Journal.
Collect all Synthesis Note entries in Jiminy's Journal.
Collect all Character Link entries in Jiminy's Journal.
Activate Antiform 13 times.