Legendary Posto Hunter Natural Enemy (31-40) > Page: 21 Acquiring Req.: Kill at least 210 Postos. (Posto's Natural Enemy Title is required.) Reward: Killing Postos grants you bonus XP. Posto Lv 35 Posto's Natural Enemy Natural Enemy (31-40) > Page: 21 Acquiring Req.: Kill at least 90 Postos. Reward: Killing Postos grants you bonus XP. Posto Lv 35