On this island, you can also obtain the fighting style Death Step from the NPC Phoeyu the Reformed after completing the requirement of 400 mastery on Dark-Step, and the Legendary Sword Rengoku on this island, obtained by killing the Awakened Ice Admiral Boss and getting the Hidden Key at a 1% chance, or getting it from ANY NPC in Ice Castle island, for a 0.1-0.2% chance.

This island is for players level 1350 - 1450. There are chunks of flat ice cubes lying around the island on the water, and in front of the island, there are more chunks of flat broken ice cubes, in which both Boat Dealer and Luxury Boat Dealer is located. (located under a tree), five Arctic Warriors, and five Snow Lurkers spawn. The island is pretty large, with a massive castle (Where the Awakened Ice Admiral spawns) towers over the island, there is an area of land with the Quest Giver, Set Spawn MISC. Ice Castle, or sometimes referred to as 'Frost Island' is the second latest island of the Second Sea, (the latest being the Forgotten Island) was introduced in Update 13.

Castle in the darkness troll sword