The Haunting brings a nighttime version of Warzone's Al Mazrah, and the map is overrun with demons and other spooky bosses to encounter with the Operation Nightmare event. This limited-time Halloween event tasks you with hunting down bosses to unlock unique rewards. Here's how you can defeat each boss to earn all the rewards in Operation Nightmare.
All bosses and rewards
Bloody Mess weapon blueprint
Each boss fight unlocks its own unique calling card reward, which doesn't sound like a huge deal, but defeating all the bosses will unlock the Bloody Mess weapon blueprint for the BAS-P submachine gun.
