First contract
ACH_FIRST_CONTRACT90.0%

Achievements and their recorded unlock rates.
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ACH_FIRST_CONTRACTACH_FIRST_LOCKED_ROOMACH_FIRST_KEYACH_FIRST_DEATHACH_SURVIVE_DANGERACH_FIRST_ZOMBIE_KILLACH_FIRST_EXTRACTIONACH_FIRST_OBJECTIVEACH_FIRST_UPGRADEACH_FIRST_PULSEACH_THREE_CONTRACTSACH_FIVE_CONTRACTS