The end of humanity, or is it?

A global earthquake destroyed the world you have known. Buildings collapsed, electricity out, phone signal and internet gone. Worst yet, skeletons arise from the cracks, and start attacking everyone, anyone, mindlessly. Police and Army are helpless. Modern firearms and bullets are ill-suited to be aimed at bones, especially when there are tons of them. How will you fare in this doomsday? When governments and laws are no longer valid, will you make the moral choices, or will you be seeing the end of humanity?