Expert Collector of Vipers Expert Collector > Page: 2 Acquiring Req.: Collect at least 50 Vipers. Reward: When collecting Vipers, the Collectable Item is doubled. Viper Lv 6 Legendary Viper Hunter Natural Enemy (1-10) > Page: 3 Acquiring Req.: Kill at least 14 Vipers. (Viper's Natural Enemy Title is required.) Reward: Killing Vipers grants you bonus XP. Viper Lv 6 Viper's Natural Enemy Natural Enemy (1-10) > Page: 3 Acquiring Req.: Kill at least 6 Vipers. Reward: Killing Vipers grants you bonus XP. Viper Lv 6