Expert Collector of Rock Stormers Expert Collector > Page: 22 Acquiring Req.: Collect at least 50 Rock Stormers. Reward: When collecting Rock Stormers, the Collectable Item is doubled. Rock Stormer Lv 70 Legendary Rock Stormer Hunter Natural Enemy (61-70) > Page: 5 Acquiring Req.: Kill at least 539 Rock Stormers. (Rock Stormer's Natural Enemy Title is required.) Reward: Killing Rock Stormers grants you bonus XP. Rock Stormer Lv 70 Rock Stormer's Natural Enemy Natural Enemy (61-70) > Page: 5 Acquiring Req.: Kill at least 231 Rock Stormers. Reward: Killing Rock Stormers grants you bonus XP. Rock Stormer Lv 70