Complete the following tasks to unlock PlayStation 3 trophy rewards.

Trophy	How to unlock
Complete a set (Bronze)	Kill enemies of 6 different types during a single round.
Death Incarnate (Silver)	Survive wave 30.
Extreme Firefighting (Silver)	Set 5 enemies on fire and then kill them with explosives.
Fancy (Bronze)	Survive 10 consecutive waves using only custom weapons.
Gladiator school (Bronze)	Survive 15 consecutive waves with each of the 4 characters.
Looking for trouble (Bronze)	Survive 5 waves in each of the 4 Arenas.
Morituri te salutant (Silver)	Survive 30 consecutive waves with at least one co-op player.
Out of honey? Chew bees! (Bronze)	Survive 5 waves using only your fists and legs.
Stick it to the enemy (Bronze)	Survive 15 consecutive waves using the analog combat controls.
Wave and Smile (Bronze)	Play any Arena in co-op.