| Achievement | How to unlock
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|---|
| Complete a set (15) | Kill enemies of 6 different types during a single round.
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| Death Incarnate (50) | Survive wave 30.
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| Extreme Firefighting (25) | Set 5 enemies on fire and then kill them with explosives.
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| Fancy (25) | Survive 10 consecutive waves using only custom weapons.
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| Gladiator school (25) | Survive 15 consecutive waves with each of the 4 characters.
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| Looking for trouble (15) | Survive 5 waves in each of the 4 Arenas.
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| Morituri te salutant (30) | Survive 30 consecutive waves with at least one co-op player.
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| Out of honey? Chew bees! (25) | Survive 5 waves using only your fists and legs.
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| Stick it to the enemy (30) | Survive 15 consecutive waves using the analog combat controls.
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| Wave and Smile (10) | Play any Arena in co-op.
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