Complete the following tasks to unlock Vita trophy rewards.

Trophy	How to unlock
Boom! (Bronze)	Kill 5 or more zombies in one shot.
Brawler (Bronze)	Kill 20 zombies in a row using only melee attacks.
Determined (Bronze)	Died 100 times and still here.
Done (Silver)	Complete game on normal difficulty.
Explorer (Bronze)	Complete every level available in the game.
Gunslinger (Bronze)	Kill 50 zombies in a row using only firearms.
I Can Use It Again And Again! (Bronze)	Retrieve five crossbow bolts from dead zombies.
Kicker (Bronze)	Kill 20 zombies in a row using only slide-kick attacks.
Pacifist (Bronze)	Complete level without killing a single zombie.
Real Survivor (Silver)	Complete game on hard difficulty.
Smasher (Bronze)	Kill 30 zombies in a row using only blunt weapons.
So It Begins... (Bronze)	Complete any non-tutorial level.
Supernatural (Bronze)	Upgrade all player abilities to maximum levels.
Survivor (Bronze)	Get x5 score-multiplier.
That Was Easy (Silver)	Complete game on easy difficulty.
Untouchable (Bronze)	Complete level without taking any damage.
Weapons? I have them All! (Bronze)	Acquire all the available weapons.
Zombies, Shmombies... (Bronze)	Kill over 1000 zombies.