Complete the following tasks to unlock the corresponding achievement.
Achievement | How to unlock
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1 run | You 1-st run this game.
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1-st win | Tank destroyed.
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MegaZombie | You win MegaZombie.
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Second wind | You win second boss.
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Secret number 1 | You find 1-st secret.
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Secret number 2 | You find 2-nd secret.
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Secret number 3 | You find 3-rd secret.
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UFO | You destroy UFO.
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Winner | You win this game.
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