Expert Collector of Black Assassin Combatants Expert Collector > Page: 35 Acquiring Req.: Collect at least 50 Black Assassin Combatants. Reward: When collecting Black Assassin Combatants, the Collectable Item is doubled. Black Assassin Combatant Lv 43 Black Assassin Combatant's Natural Enemy Natural Enemy (41-50) > Page: 20 Acquiring Req.: Kill at least 132 Black Assassin Combatants. Reward: Killing Black Assassin Combatants grants you bonus XP. Black Assassin Combatant Lv 43 Legendary Black Assassin Combatant Hunter Natural Enemy (41-50) > Page: 20 Acquiring Req.: Kill at least 308 Black Assassin Combatants. (Black Assassin Combatant's Natural Enemy Title is required.) Reward: Killing Black Assassin Combatants grants you bonus XP. Black Assassin Combatant Lv 43