Unlock bonus level
ACH_UNLOCK_BONUS_LEVEL35.0%

Achievements and their recorded unlock rates.
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ACH_UNLOCK_BONUS_LEVELACH_UNLOCK_FIRST_ITEMACH_ALL_LEVELS_IN_WORLDACH_1_UNUSED_ITEMACH_50_TREATSACH_2_UNUSED_ITEMSACH_MOVE_TREAT_WITH_CARTACH_100_TREATSACH_LEVEL_IN_EVERY_WORLDACH_COMPLETE_SHARED_LEVELACH_SHARE_LEVELACH_GET_ALL_TREATSACH_INHALE_PIG_BARFACH_COMPLETE_ALL_LEVELS