Here is the full list of all 36 Mini Ninjas trophies - there are 21 bronze, 9 silver, 5 gold and 1 platinum.
Congratulations, you have unlocked all trophies
Visit all temples
Free all caged animals
Use Futo in combat on all levels
Complete game on hard difficulty
Complete game on easy or medium difficulty
Defeat the Evil Samurai Warlord
Collect all Jizo statues
Defeat an enemy as a snowball
Defeat Boss Screeching Owl
Defeat 30 spearmen with the spear
Reach level cap
Retrieve all five missing ninja
Find and free Kunoichi
Collect one of each ingredient
Complete all Wandering Tengu quests
Defeat Boss Timid Swimmer
Travel far in full gallop
Find and free Tora
Defeat Boss Windy Pants
Bring sunshine to all the denizens of the graveyard
Defeat 50 enemies with the bow
Find and free Shun
Complete a level without being seen
Flawless Great River Canyon rafting
Defeat Boss Lumbering Fool
Defeat 100 enemies with stealth attack
Defeat a large one
Defeat 10 enemies as the boar
Expend 1500 Ki using Kuji magic
Incite 50 enemies to dance
Shake 15 trees
Find and free Suzume
Defeat 10 enemies as the bear
Completed basic training
Find Futo