Complete the following tasks to unlock PlayStation 3 trophy rewards.

Trophy	How to unlock
Atomic Ninja (Gold)	Reach rank 30.
Deathmatch champion (Silver)	Win a four-player Deathmatch online match.
Don't follow the light! (Bronze)	Die 20 times in a single online match.
Fresh out of school (Bronze)	Complete the Ninja Academy.
Happy New Year! (Bronze)	Explode the rocket.
Let the party begin! (Bronze)	Create & start an online match with three other people in it.
Massacre (Bronze)	Get 1000 score in a single Deathmatch online match.
Ninja costume party (Bronze)	Unlock a new ninja.
Objectives champion (Silver)	Win a four-player Objectives online match.
Overpowered (Silver)	Fully upgrade a Super Ability.
Small victory (Bronze)	Win a round in Objectives in online match.
Trials and tribulations (Silver)	Complete all Ninja Trials.