Expert Collector of Vampire Slaves Expert Collector > Page: 13 Acquiring Req.: Collect at least 50 Vampire Slaves. Reward: When collecting Vampire Slaves, the Collectable Item is doubled. Vampire Slave Lv 46 Legendary Vampire Slave Hunter Natural Enemy (41-50) > Page: 13 Acquiring Req.: Kill at least 308 Vampire Slaves. (Vampire Slave's Natural Enemy Title is required.) Reward: Killing Vampire Slaves grants you bonus XP. Vampire Slave Lv 46 Vampire Slave's Natural Enemy Natural Enemy (41-50) > Page: 13 Acquiring Req.: Kill at least 132 Vampire Slaves. Reward: Killing Vampire Slaves grants you bonus XP. Vampire Slave Lv 46