Here is the full list of all 31 Save the Ninja Clan (EU) trophies - there are 14 bronze, 10 silver, 6 gold and 1 platinum.
Good job! Completed all tasks!
Beat 10 levels without dying.
Beat 5 levels without dying.
Beat the third boss.
Get a knife modification.
Fall for it on level two.
Beat level 4 with controls reversed.
Find and complete the secret ending.
Complete all the levels.
Kill 50 enemies.
Play Pong in the game.
Level 29, play as a scroll.
Level 25, ride a cloud.
Beat a level with an A+ time.
Complete 10 secrets.
Beat the second boss.
Explode 50 times
Die 100 times.
Level 19, crash the game.
Collect 15 Collectables.
Kill 25 enemies.
Beat half the levels.
Die 50 times.
Level 11, go to "prison".
Beat the first boss.
Attempt a level 25 times.
Attempt a level 10 times.
Level 9, see a smiley face.
Kill yourself with your own weapon.
Complete one secret.
Beat the first level