Complete the following tasks to unlock PlayStation 3 trophy rewards.

Achievement	How to unlock
Behind Enemy Lines (Silver)	Drive an APC into the enemy's home base, then have at least one teammate spawn into that APC.
Canyon Run (Silver)	Using a Warhawk, shoot down an enemy Warhawk in the central gorge in Vaporfield Glacier.
Porcupine (Gold)	Destroy an enemy Warhawk with the APC's E-POD shield.
Shield Breaker (Silver)	Break an enemy E-POD shield using the Lightning Shell.