'Cold War' and 'Warzone' Wakizashi Sword Guide: How to Unlock It With Finishing Moves In both "Call of Duty: Black Ops Cold War" and "Warzone," fans can unlock the Wakizashi, a katana great for melee attacks. But in order to do so, you have to perform the Finishing Moves first, and here's how to do that. by Nhx T.