Expert Collector of Black Assassin Guards Expert Collector > Page: 35 Acquiring Req.: Collect at least 50 Black Assassin Guards. Reward: When collecting Black Assassin Guards, the Collectable Item is doubled. Black Assassin Guard Lv 42 Black Assassin Guard's Natural Enemy Natural Enemy (41-50) > Page: 10 Acquiring Req.: Kill at least 132 Black Assassin Guards. Reward: Killing Black Assassin Guards grants you bonus XP. Black Assassin Guard Lv 42 Legendary Black Assassin Guard Hunter Natural Enemy (41-50) > Page: 10 Acquiring Req.: Kill at least 308 Black Assassin Guards. (Black Assassin Guard's Natural Enemy Title is required.) Reward: Killing Black Assassin Guards grants you bonus XP. Black Assassin Guard Lv 42