Fastkill
ACH_FASTKILL76.4%

Achievements and their recorded unlock rates.
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ACH_FASTKILLACH_UNDERWATER_BOSS_KILLEDACH_BUG_BOSS_KILLEDACH_BONE_BOSS_KILLEDACH_SEA_BREED_UNLOCKEDACH_BUG_BREED_UNLOCKEDACH_VAGORIAN_BREED_UNLOCKEDACH_BONE_BREED_UNLOCKEDACH_MYCOPHORUS_BREED_UNLOCKEDACH_FRANKENSTEIN_BOSS_KILLEDACH_PACIFIST_LEVELACH_ONE_OF_EACH_BREEDACH_UTILITARIAN