Here is the full list of all 55 KINGDOM HEARTS Dream Drop Distance trophies - there are 47 bronze, 5 silver, 2 gold and 1 platinum.
Obtain all trophies.
Max out a Spirit's Affinity Level.
Achieve 100% completion in Combat, Story, Items, and Game Records.
Max out and install all Support and Spirits abilities.
Achieve 100% completion in Items.
Obtain all commands.
Earn a score of 1,000 or higher on the Light Cycle.
Earn a score of 200 or higher in the Balloon mini-game.
Use every Training Toy.
Earn a score of 400 or higher in the Water Barrel mini-game.
Earn a score of 800 or higher in the Candy Goggles mini-game.
Achieve 100% completion in Story.
Obtain all recipes.
Achieve a Rush Level of 20.
Achieve 100% completion in Combat.
Obtain 3,000 or more medals in Flick Rush.
Breed a ★ Rank Spirit.
Complete all Secret Portals as both Sora and Riku.
Complete all Special Portals in Traverse Town as both Sora and Riku.
Drop 100 or more times.
Complete all Special Portals in Symphony of Sorcery as both Sora and Riku.
Complete all Special Portals in The Grid as both Sora and Riku.
Complete all Special Portals in Prankster's Paradise as both Sora and Riku.
Complete all Special Portals in La Cité des Cloches as both Sora and Riku.
Complete all Special Portals in Country of the Musketeers as both Sora and Riku.
Complete all Special Portals in The World That Never Was as both Sora and Riku.
Obtain all Dream Pieces.
Defeat 4 or more enemies in one turn of Melody Catcher.
Activate all of Wonder Comic's effects at least once.
Trap 6 or more enemies in Bubble Burst.
Activate all Code Break commands.
Make a purchase at every Moogle Shop.
Complete all 7 Link Portal bonus objectives.
Defeat 5 or more enemies with a single hit in Slingshot.
Complete The World That Never Was as both Sora and Riku.
Sever all chains with a single slash 3 times in a row using Nightmare's End or Mirage Split.
Achieve a cumulative level of 100.
Rack up 300 or more Drop Points in a single turn.
Unlock all nodes on any Spirit's Ability Link board.
Complete Symphony of Sorcery as both Sora and Riku.
View all flashbacks.
Complete Country of the Musketeers as both Sora and Riku.
Revisit and complete Traverse Town as both Sora and Riku.
Complete Prankster's Paradise as both Sora and Riku.
Complete a dive without taking damage.
Complete The Grid as both Sora and Riku.
Win a Flick Rush duel by lining up three 7s.
Create a party with 3 Spirits and make them all very happy.
Complete La Cité des Cloches as both Sora and Riku.
Connect 6 or more points with a single Faithline.
Rescue Spirits 3 times in battle.
Complete Traverse Town as both Sora and Riku.
Create a party with 3 Spirits.
Perform an A-Rank dive.
Defeat the phantom Ursula and begin the Mark of Mastery exam.