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.
Find and complete the secret ending.
Play Pong in the game.
Beat the third boss.
Complete all the levels.
Level 29, play as a scroll.
Level 25, ride a cloud.
Complete 10 secrets.
Kill yourself with your own weapon.
Beat the second boss.
Level 19, crash the game.
Level 9, see a smiley face.
Get a knife modification.
Collect 15 Collectables.
Beat half the levels.
Level 11, go to "prison".
Beat 5 levels without dying.
Kill 50 enemies.
Beat the first boss.
Explode 50 times
Die 100 times.
Complete one secret.
Beat level 4 with controls reversed.
Attempt a level 25 times.
Die 50 times.
Beat a level with an A+ time.
Kill 25 enemies.
Attempt a level 10 times.
Fall for it on level two.
Beat the first level