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