Atomic Ninja Trophy
Reach rank 30.
Sure to be your last trophy, you need approximately 66,000 points to reach level 30. If you're boosting you can play King of the Hill for high point payouts. The Wormhole map is recommended since the "hill" stays in the same spot for the entire match. In a fifteen minute match you can earn a maximum of 4800 points.
If you are playing on both PS3 and Vita this is one of two trophies that will auto pop. Once you have reached level 30 on one system you will need to complete one match on the other system for the trophy to unlock.