| Achievement | How to unlock
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| - Kill enemies of 6 different types during a single round.
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- Extreme Firefighting (25)
| - Set 5 enemies on fire and then kill them with explosives.
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| - Survive 10 consecutive waves using only custom weapons.
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| - Survive 15 consecutive waves with each of the 4 characters.
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| - 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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