The new single player adventure has 80 missions, and features Captain Cuttlefish, Pearl, and Marina, and also has new characters that haven’t been revealed yet. By beating the mode, Octolings (Boy & Girl) can be used in normal matches.
New and Returning Stages:
Callie also appears in Octo Valley after certain requirements are met! She’ll give the player info and tips.
Rank X will also be added at a later date, with more info to come later. It is an even higher rank than S+.
Octo Expansion will arrive in Summer 2018. Splatoon 2 is available for Nintendo Switch.