Expert Collector of Grave Zombie Leaders Expert Collector > Page: 24 Acquiring Req.: Collect at least 50 Grave Zombie Leaders. Reward: When collecting Grave Zombie Leaders, the Collectable Item is doubled. Grave Zombie Leader Lv 21 Grave Zombie Leader's Natural Enemy Natural Enemy (21-30) > Page: 8 Acquiring Req.: Kill at least 51 Grave Zombie Leaders. Reward: XP increases when hunting Grave Zombie Leader Grave Zombie Leader Lv 21 Legendary Grave Zombie Leader Hunter Natural Enemy (21-30) > Page: 8 Acquiring Req.: Kill at least 119 Grave Zombie Leaders. (Grave Zombie Leader's Natural Enemy Title is required.) Reward: XP increases when hunting Grave Zombie Leader Grave Zombie Leader Lv 21