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 the Oathkeeper Keyblade.
Seal the keyhole in 100 Acre Wood.
Obtain over 10,000 Munny.
Seal the keyhole in Olympus Coliseum.
Win the Hercules Cup.
Open 100 treasure chests.
Win the Pegasus Cup.
Seal the keyhole in Halloween Town.
Shoot down over 2,500 enemies with your gummi ship.
Seal the keyhole in Never Land.
Seal the keyhole in Atlantica.
Complete any time trial challenge.
Defeat over 2,000 Heartless.
Complete any solo challenge.
Escape from Monstro.
Synthesize 3 types of items.
Synthesize an item for the first time.
Seal the keyhole in Agrabah.
Win the Phil Cup.
Seal the keyhole in Traverse Town.
Seal the keyhole in Deep Jungle.
Clear gummi ship mission 2.
Modify a gummi ship and update the data.
Seal the keyhole in Wonderland.
Clear gummi ship mission 1.
Obtain all trophies.
Clear Final Mix on Proud.
Clear Final Mix.
Clear Final Mix on Beginner.
Clear the game without changing equipment.
Clear the game without using a continue.
Defeat the World of Chaos in the End of the World within 15 hours.
Defeat the Mysterious Man in Hollow Bastion.
Defeat the Phantom at the Clock Tower.
Defeat Kurt Zisa in Agrabah.
Win the Hades Cup.
Defeat the Ice Titan in the Gold Match at Olympus Coliseum.
Defeat Sephiroth in the Platinum Match at Olympus Coliseum.
Get Sora to Level 100.
Seal the keyhole in Hollow Bastion.
Collect all Jiminy's Journal entries.
Collect all Story entries in Jiminy's Journal.
Collect all Ansem Reports in Jiminy's Journal.
Collect all Character entries in Jiminy's Journal.
Collect all 101 Dalmatian entries in Jiminy's Journal.
Collect all Trinity List entries in Jiminy's Journal.
Collect all Mini-game entries in Jiminy's Journal.
Synthesize all items.
Synthesize 15 types of items.
Synthesize 30 types of items.
Obtain all gummi ship blueprints.
Clear all gummi ship routes.
Clear gummi ship mission 3.
Obtain all Keyblades.
Obtain all staves.
Obtain all shields.