| Achievement | How to unlock
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| - The key to everything, and then some.
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- A shimmer in the darkness
| - Find all parts of the golden gun.
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- A surge of deepest satisfaction
| - Defeat the cellar inhabitant.
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| - Kill 50 enemies without getting hurt.
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| - Prevent the looter from obtaining a weapon.
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| - Score 100k in survival mode.
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| - Destroy 2,000 environment objects.
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- First Steps into the Rain
| - Reach the end of the first level.
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| - Survive the electric chase.
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| - Obtain automatic guards for the village.
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- Industry-scale harvesting
| - Shred 100 monsters with the harvester.
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- Just like when I was young
| - Survive the ambush at the schoolyard.
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| - Eliminate the threat in the laboratory.
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| - Bring the lighthouse back to life.
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| - Upgrade all weapons to Max level.
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| - Achieve a x20 multiplier.
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| - Dissolve 5 zombies in acid.
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- Nothing in common but the enemy
| - Allow the looter to live.
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- One more layer between them and me
| - Find all pieces of the flak jacket.
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| - Survive the subway journey.
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| - Acquire all weapons in story mode.
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| - Help the refugees at the factory.
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| - Find the secret cave behind the bushes.
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| - Blow up 7 enemies with a single explosion.
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| - Defeat a boss with just the pistol.
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| - Help all 6 park defenders to survive.
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| - Score 50k in survival mode.
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| - Survive the worm invasion.
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| - Score 250k in survival mode.
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| - Finish the story on "maniac" difficulty.
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| - Achieve a x10 multiplier.
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| - Solve the village's insect problem.
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| - Defeat a boss without getting hurt.
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