Prologue
We’ve all been there. Imagine this: You find yourself in a dark, foreboding corridor of some creepy facility with a torch that’s not as powerful as your average mobile phone’s ‘torch’ mode, casting a dim light into the distance. Your head… hurts. Must have been that [insert name of relevant: zombie/beast/abomination] you encountered previously who had a killer right-hook and fancied nibbling on your leg like it was a chicken drumstick. You rustle through your medic pack and apply your last bandage. That’ll keep you going for a while. You hope.
The facility’s main alarm goes off, alerting any nearby creature with even a passing interest in human flesh to your presence. Your heart beats a little bit faster, unsure of what’s to come. In the distance you make out the silhouette of some 7ft tall creature who’s making good progress towards you probably due to a good-fitting pair of trainers it took off the last victim. Shotgun out: let’s go for a head shot shall we? Nice and easy. *click*. Oh dear.