Legendary Zero Hunter Natural Enemy (71-80) > Page: 5 Acquiring Req.: Kill at least 665 Zeros. (Zero's Natural Enemy Title is required.) Reward: Killing Zeros grants you bonus XP. Zero Lv 74 Zero's Natural Enemy Natural Enemy (71-80) > Page: 5 Acquiring Req.: Kill at least 285 Zeros. Reward: Killing Zeros grants you bonus XP. Zero Lv 74