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.
Complete 10 secrets.
Find and complete the secret ending.
Play Pong in the game.
Level 25, ride a cloud.
Get a knife modification.
Beat the third boss.
Complete all the levels.
Level 29, play as a scroll.
Kill yourself with your own weapon.
Beat a level with an A+ time.
Beat the second boss.
Kill 50 enemies.
Level 19, crash the game.
Explode 50 times
Beat half the levels.
Die 100 times.
Collect 15 Collectables.
Level 11, go to "prison".
Beat the first boss.
Level 9, see a smiley face.
Kill 25 enemies.
Die 50 times.
Complete one secret.
Beat level 4 with controls reversed.
Attempt a level 25 times.
Attempt a level 10 times.
Fall for it on level two.
Beat the first level