Assassin’s Creed III on the PlayStation 3 will contain four exclusive missions, Sony has announced.

The four-mission arc begins with a special request from General Washington to expose a plot to overthrow West Point, a critical link in the defence of the Colonies against Great Britain.

In related news, Ubisoft has confirmed that Assassin’s Creed III will be the last game to feature modern day assassin Desmond Miles.

“What we’re trying to do is bring some finality to Desmond’s story. To actually wrap up what you’ve opened and experienced with him,” said lead designer Steve Masters.

“A lot of the misdirection and the way we’ve been meandering a little bit has been kind of frustrating as a player and for the audience, so we wanted to make sure there was going to be more substance to get your teeth into.”

Assassin's Creed III is due out on October 31 on PlayStation 3 and Xbox 360, November 23 on Windows PC, and November 30 on Wii U.