Unlockable Extra Difficulty Settings Apocalypse Edition You can access the modes indicated below by satisfying the corresponding conditions. Morbid Mode - Finish the game on Grim [...]
Sometime in the not-too-distant future, a deadly virus is once again sweeping the globe, infecting everyone in its path and killing off almost all the human race. To the horror of the survivors, the dead have begun rising from the grave, hell-bent on feeding on the living and wiping out mankind for good. But, just as it seems all is lost, a small pocket of survivors emerges, determined to take back the world from the undead.