Rogue Quest: The Vault of the Lost Tyrant のDLC＆パッケージ

Follow Cassandra Nech, great adventurer from the Rogue's Guild, in her new quest! Deep under the sea, in a lost vault, lies the Sea Tyrant's treasure: will you help Cassandra to get it? Be careful, though: someone else may be hunting that treasure, and the ancient vault could be full of dangers...