Expert Collector of Arkaros Slave Commanders Expert Collector > Page: 5 Acquiring Req.: Collect at least 50 Arkaros Slave Commanders. Reward: When collecting Arkaros Slave Commanders, the Collectable Item is doubled. Arkaros Slave Commander Lv 42 Arkaros Slave Commander's Natural Enemy Natural Enemy (41-50) > Page: 1 Acquiring Req.: Kill at least 132 Arkaros Slave Commanders. Reward: Killing Arkaros Slave Commanders grants you bonus XP. Arkaros Slave Commander Lv 42 Legendary Arkaros Slave Commander Hunter Natural Enemy (41-50) > Page: 1 Acquiring Req.: Kill at least 308 Arkaros Slave Commanders. (Arkaros Slave Commander's Natural Enemy Title is required.) Reward: Killing Arkaros Slave Commanders grants you bonus XP. Arkaros Slave Commander Lv 42