User blog comment:AntiScootaTwo/Exo Zombies Trailer released/@comment-6343006-20141219234913/@comment-12521892-20141220012431

"you can take the talking protagonist and multiple ending thing from Treyarch as well."

Sledgehammer didn't take zombies from Treyarch though. From the teaser on the map Riot and this teaser trailer, this looks NOTHING like Treyarch's zombies, hell Sledgehammer even says "A new breed of zombies" meaning this zombie mode is going to be different from Treyarchs