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Annihilator (Bronze)
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Kill more than 85% of the total enemies in a zone.
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Assault Hero (Gold)
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Complete the game.
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Exterminator (Bronze)
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Defeat the giant spider.
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Lair Slayer (Silver)
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Complete all underground zones without using a continue.
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Peace Maker (Silver)
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Finish a zone killing less than 50% of the enemies.
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Sharp Shooter (Silver)
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Keep your accuracy higher than 70%.
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Small Arms Expert (Bronze)
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Finish a zone without using grenades or nukes.
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Speed Freak (Bronze)
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Finish a zone in less than 15 minutes.
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Survivor (Silver)
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Finish a zone killing 60% of the units on foot.
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Tricked Out (Bronze)
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Max out all of the vehicle power-ups.
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Twin Medal (Bronze)
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Finish a zone in Co-op mode.
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Unstoppable (Bronze)
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Finish a zone without losing a life.
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