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Data from Steam — Steam Web API Terms of Use. Last updated .
| Achievement | How to unlock | Unlocked by | Rarity |
|---|---|---|---|
| Cure 500 infected with pistols | 5.5% | Rare | |
| Complete any official mission on insane without dying | 5.5% | Rare | |
| Cure 250 infected with the MP5k | 6.3% | Rare | |
| Cure 500 infected with the XM1014 | 6.4% | Rare | |
| Cleanse 500 infected with fire |
| Rare |
| Take 5 or more infected with you in a grenade suicide | 6.9% | Rare |
| Cure 250 infected with the M3 | 7% | Rare |
| Complete any official mission on skilled without dying | 7.3% | Rare |
| Complete Trainstation on average or higher | 8.6% | Rare |
| Cure 150 infected with your fist | 9.9% | Rare |
| Complete Flatline on average or higher | 10.3% | Rare |
| Complete Office on average or higher | 11.3% | Rare |
| Cure 10 or more infected with a single grenade | 12.2% | Rare |
| Complete Cityblock on average or higher | 13.6% | Rare |
| Complete Bunker on average or higher | 15.1% | Rare |
| Complete any official mission on average without dying | 19.5% | Rare |