Expert Collector of Grave Zombies Expert Collector > Page: 11 Acquiring Req.: Collect at least 50 Grave Zombies. Reward: When collecting Grave Zombies, the Collectable Item is doubled. Grave Zombie Lv 19 Grave Zombie's Natural Enemy Natural Enemy (11-20) > Page: 10 Acquiring Req.: Kill at least 27 Grave Zombies. Reward: Killing Grave Zombies grants you bonus XP. Grave Zombie Lv 19 Legendary Grave Zombie Hunter Natural Enemy (11-20) > Page: 10 Acquiring Req.: Kill at least 63 Grave Zombies. (Grave Zombie's Natural Enemy Title is required.) Reward: Killing Grave Zombies grants you bonus XP. Grave Zombie Lv 19