The second DLC for the hit zombie survival game State of Decay released today. Lifeline offers an entirely new story with new characters, weapons and excitement. The major feature that Lifeline offers is a horde mode, with zombies attacking constantly. The expansion is quite a bit more difficult than the base game and is a full experience rather than a “tacked on” ending or story. The addition of high-powered military machinery is another notable bit of zombie removal strategies. The DLC released today, and is available immediately for $6.99.