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Story Mode Completed: Finish Level 10 Successfully
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Butcher: Destroy 500 enemies
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Slayer: Destroy 2500 enemies
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Mass Murderer: Destroy 10000 enemies
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Berserker: Destroy 50 enemies in less than 1 second
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Two Birds One Stone: Destroy 15 or more enemies with a single explosion
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Chain Reaction: Drop a Decoy and a Turret in less than 1 second
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Bomber: Destroy 1000 enemies with the bomb launcher weapon
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By a Hair's Breadth: Finish a wave with 1 or less seconds left
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Sniper: Destroy 1000 enemies using the laser weapon
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Bullfighter: Destroy 100 Bull enemies
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Slippery: Stay hidden for more than 15 seconds in a single level
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Live in the Shadows: Stay hidden for a total of 10 minutes
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Bullet Time: Destroy 10 enemies with the time stopped or slowed down in one go
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Shield Breaker: Destroy 100 Shield bearer enemies
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