Expert Collector of Skeletons Expert Collector > Page: 1 Acquiring Req.: Collect at least 50 Skeletons. Reward: When collecting Skeletons, the Collectable Item is doubled. Skeleton Lv 11 Legendary Skeleton Hunter Natural Enemy (11-20) > Page: 1 Acquiring Req.: Kill at least 63 Skeletons. (Skeleton's Natural Enemy Title is required.) Reward: Killing Skeletons grants you bonus XP. Skeleton Lv 11 Skeleton's Natural Enemy Natural Enemy (11-20) > Page: 1 Acquiring Req.: Kill at least 27 Skeletons. Reward: Killing Skeletons grants you bonus XP. Skeleton Lv 11