Your character starts out in a cabin, in a middle of a large forest that seems to be cut off from the rest of the map, or acts as its own separate map.
Around the house, you can find some furniture, guns with ammunition, and melee weapons to defend yourself against the undead.
The zombies will begin to spawn almost instantly and will never stop spawning. The only "end" to this mode is death, as with every other mode.
Attempting to run away or to hide will not work, as the zombies seem to always know your location unless you hide in the upstairs room.
Despite the zombie horde being endless, the player is able to take the furniture from around the house and attempt to barricade the house entrances though it won't hold- The zombies will eventually break through it and most likely kill the player.