First enemy kill
ACH_FIRST_ENEMY_KILL84.3%

Achievements and their recorded unlock rates.
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ACH_FIRST_ENEMY_KILLACH_RESCUE_FIRST_SLEEPWALKERACH_FIRST_COINSACH_DELIVER_100_ITEMSACH_RESCUE_THREE_IN_SESSIONACH_FIRST_REVIVEACH_RESCUE_AFTER_REVIVALACH_TRIGGER_ROCKFALLACH_BOWLING_STRIKEACH_TEAMMATE_PROJECTILE_HITACH_LEVEL_LOW_HEALTHACH_LEVEL_NO_DAMAGEACH_BREAK_ENEMY_GRABACH_GRAVITY_GUN_RIDEACH_REVIVE_THREE_TEAMMATES