Successfully complete one of the following tasks to get a trophy:

Off You Go (Bronze): Completed basic training.
Found Futo (Bronze): Find Futo.
Found Suzume (Bronze): Find and free Suzume.
Found Shun (Bronze): Find and free Shun.
Found Kunoichi (Bronze): Find and free Kunoichi.
Found Tora (Bronze): Find and free Tora.
Off the Richter Scale (Bronze): Defeat Boss Lumbering Fool.
Smell You Later (Bronze): Defeat Boss Windy Pants.
Tree Hugger (Bronze): Shake 15 trees.
Avalanche (Bronze): Defeat an enemy as a snowball.
Smooth Sailing (Bronze): Flawless Great River Canyon rafting.
Bow Before Me (Bronze): Defeat 50 enemies with the bow.
Eat My Dust (Bronze): Travel far in full gallop.
Pied Piper (Bronze): Incite 50 enemies to dance.
Poker (Bronze): Defeat 30 spearmen with the spear.
Don't Blame it on the Sunshine (Bronze): Bring sunshine to all the denizens of the graveyard.
No Conjurer of Cheap Tricks (Bronze): Expend 1500 Ki using Kuji magic.
Big Guy (Bronze): Defeat a large one.
Boardom (Bronze): Defeat 10 enemies as the boar.
Bear With Me (Bronze): Defeat 10 enemies as the bear.
Sightseeing (Bronze): Visit all temples.
Lost and Found (Silver): Retrieve all five missing ninja.
Tripped and Fell (Silver): Defeat Boss Timid Swimmer.
Crash Landing (Silver): Defeat Boss Screeching Owl.
Restore Balance (Silver): Defeat the Evil Samurai Warlord.
Sage of Philosophy (Silver): Reach level cap.
Stop! Futo Time! (Silver): Use Futo in combat on all levels.
Now You See Me... (Silver): Defeat 100 enemies with stealth attack.
Botanist (Silver): Collect one of each ingredient.
Tengu Friend (Silver): Complete all Wandering Tengu quests.
Animal Friend (Gold): Free all caged animals.
Little Ninja (Gold): Complete game on easy or medium difficulty.
Hard Little Ninja (Gold): Complete game on hard difficulty.
Silent Assas... Ninja (Gold): Complete a level without being seen.
Completist (Gold): Collect all Jizo statues.
Platinum (Platinum): Congratulations, you have unlocked all trophies.