Complete the following tasks to unlock PlayStation 3 trophy rewards.

Trophy	How to unlock
Butcher (Bronze)	Kill 10 enemies in a row without losing a life in a multiplayer game.
Champion's debut (Bronze)	Complete five levels.
Diamond necklace (Bronze)	Get 5 diamond helmets.
Greedy Worker (Silver)	Collect 5,000 jewels.
Mini copper (Silver)	Get all bronze helmets.
Ninja (Bronze)	Kill 3 enemies in 4 seconds in a multiplayer game.
Simply Rotastic (Bronze)	Do the Rotastic trick.
Socializer (Bronze)	Play 20 multiplayer games.
The champion is at his pinnacle (Silver)	Unlock access to World 7.
The champion is confirmed (Silver)	Unlock access to World 5.
The champion is revealed (Bronze)	Unlock access to World 3.
This is No life!!! (Gold)	Get all gold helmets.