| Achievement | How to unlock
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| BUTCHER | Complete a level using only a knife.
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| EXECUTION | You executed the prisoner.
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| MISSION 10 | Complete the tenth mission.
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| MISSION 11 | Complete the eleventh mission.
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| MISSION 12 | Complete the twelfth mission.
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| MISSION 13 | Complete the thirteenth mission.
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| MISSION 14 | Complete the fourteenth mission.
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| MISSION 15 | Complete the fifteenth mission.
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| MISSION 1 | Complete the first mission.
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| MISSION 2 | Complete the second mission.
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| MISSION 3 | Complete the third mission.
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| MISSION 4 | Complete the fourth mission.
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| MISSION 5 | Complete the fifth mission.
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| MISSION 6 | Complete the sixth mission.
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| MISSION 7 | Complete the seventh mission.
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| MISSION 8 | Complete the eighth mission.
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| MISSION 9 | Complete the ninth mission.
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| SHARPSHOOTER | Complete a level using guns only.
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| THE END | Complete the game.
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