Here is the full list of all 56 KINGDOM HEARTS FINAL MIX trophies - there are 49 bronze, 4 silver, 2 gold and 1 platinum.
Obtain all trophies.
Clear Final Mix on Proud.
Clear game on Final Mix or a higher difficulty level.
Obtain all staves.
Obtain all shields.
Obtain 30 or more gummi ship blueprints.
Shoot down over 2,500 enemies with your gummi ship.
Clear gummi ship mission 3.
Clear gummi ship mission 2.
Collect all Jiminy's Journal entries.
Collect all Character entries in Jiminy's Journal.
Defeat Sephiroth in the Platinum Match at Olympus Coliseum.
Collect all Ansem Reports in Jiminy's Journal.
Obtain all Keyblades.
Defeat the Ice Titan in the Gold Match at Olympus Coliseum.
Defeat Kurt Zisa in Agrabah.
Defeat the Phantom at the Clock Tower.
Defeat the Mysterious Man in Hollow Bastion.
Synthesize all items.
Get Sora to Level 100.
Synthesize 30 types of items.
Complete any time trial challenge.
Complete any solo challenge.
Collect all Mini-game entries in Jiminy's Journal.
Synthesize 15 types of items.
Defeat over 2,000 Heartless.
Synthesize 3 types of items.
Synthesize an item for the first time.
Win the Hades Cup.
Collect all Story entries in Jiminy's Journal.
Collect all 101 Dalmatian entries in Jiminy's Journal.
Collect all Trinity List entries in Jiminy's Journal.
Seal the keyhole in Olympus Coliseum.
Win the Hercules Cup.
Win the Pegasus Cup.
Win the Phil Cup.
Seal the keyhole in 100 Acre Wood.
Obtain over 10,000 Munny.
Seal the keyhole in Atlantica.
Clear all gummi ship routes.
Open 100 treasure chests.
Clear the game without changing equipment.
Clear the game without using a continue.
Clear game on Final Mix: Beginner or a higher difficulty level.
Defeat the World of Chaos in the End of the World within 15 hours.
Seal the keyhole in Hollow Bastion.
Obtain the Oathkeeper Keyblade.
Seal the keyhole in Traverse Town.
Seal the keyhole in NeverLand.
Seal the keyhole in Halloween Town.
Escape from Monstro.
Clear gummi ship mission 1.
Seal the keyhole in Agrabah.
Seal the keyhole in Deep Jungle.
Seal the keyhole in Wonderland.
Modify a gummi ship and update the data.