The first DLC for Zombie Army 4: Dead War arrives today. "Terror Lab" is the first mission in a new three-part campaign (Hell Cult) that will be released over the course of the next few months. Also available today are some new character and weapon skins, new weapons (submachine gun and a semi-auto carbine), along with what appears to be a new playable character, the "American Sea Captain." All of this is included in the $35 Season Pass, or it can be purchased separately. If you're not interested in any of that, then there's a new Horde Map, Undead Wood, available for free.