you're a soldier in the army, you were the best out of the best, you have been ordered to retrieve a very classified information in a research facility full of zombies that have breached their containment, you have to search every computer in the facility in order to find the one that has the classified information, you have to get it in you're USB.

You're commanding officer have ordered a scientist to help you kill and identify different zombies in the facility to help you via radio.