Aria's Natural Enemy Natural Enemy (11-20) > Page: 8 Acquiring Req.: Kill at least 27 Arias. Reward: Killing Arias grants you bonus XP. Aria Lv 17 Legendary Aria Hunter Natural Enemy (11-20) > Page: 8 Acquiring Req.: Kill at least 63 Arias. (Aria's Natural Enemy Title is required.) Reward: Killing Arias grants you bonus XP. Aria Lv 17