it would be nice to have a storyline becuase if sonny has tought me anything its to not go killing zombies needlesly. Like maybe the cave has a lot of rare minerals in it and you were sent by the goverment to clear it out, and the zombies are dead (older) miners and the robots could be more recent miners who have short curcuited and are fighting to control the mine against the zombies (who dont even know whats happening) and skelees who could be ancient guardians or something. But thats just me being picky. =}
better than anything you can do