| Achievement | How to unlock
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|---|
| - Cleanse 500 infected with fire.
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| - Cure 10 or more infected with a single grenade.
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| - Complete any official mission on average without dying.
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| - Complete Office on insane.
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| - Complete Cityblock on average or higher.
|
| - Complete Office on average or higher.
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| - Complete any official mission on insane without dying.
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| - Complete any official mission without using a primary weapon or equipment on skilled or higher.
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| - Complete Flatline on insane.
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| - Provide your team with 2500 total health.
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| - Complete Bunker on insane.
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| - Cure 250 infected with the MP5k.
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| - Cure 10,000 total infected.
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| - Cure 100 infected in a single life.
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| - Complete any official mission on casual without dying.
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| - Complete any official mission on skilled without dying.
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| - Complete Cityblock on insane.
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| - Cure 150 infected with your fist.
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| - Cure 250 infected soldiers.
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| - Cure 500 infected with the XM1014.
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| - Cure 250 infected with the M3.
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| - Cure 500 infected with pistols.
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| - Cure 500 infected with the Galil.
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| - Take 5 or more infected with you in a grenade suicide.
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| - Cure 400 infected with the PSG1.
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| - Cure 500 infected with the sentry gun.
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| - Complete Bunker on average or higher.
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| - Complete any official mission with no friendly fire incidents on skilled or higher.
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| - Conplete 100 successful missions average or higher.
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| - Complete Flatline on average or higher.
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