Achievement | How to unlock
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| - Complete the forth stage.
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- Bridge Over The River Doom
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| - Complete stage 4 under HARDCORE mode.
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| - Complete stage 1 under HARDCORE mode.
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| - Complete stage 3 under HARDCORE mode.
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| - Complete stage 5 under HARDCORE mode.
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| - Complete the second stage.
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| - Complete the final stage.
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| - Complete the third stage.
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| - Complete the fifth stage.
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| - Complete stage 2 under HARDCORE mode.
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| - Complete the first stage.
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| - Complete the game under HARDCORE mode.
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