What does it mean when you dream about being the bad guy, and the good guy at the same time?

So anyway I had this dream where I was in a video game. The scene was a medium-sized kitchen. Pretty clean actually and there's, also a guy in the room with me. (I'm female btw.) But what makes this more interesting is that I take turns, at being a Zombie/Cannibal Killer and being his helper/friend.

Also when I was being the helper/friend. I remember him standing on top of a table, piled up with a heck of a lot of food on plates or something. Anyway the food ranged from being rotten and being fresh. There was also a lot of meat as well. Human and otherwise of course. At the same time while he's in terror trying not to poop his pants. This Zombie/Cannibal enters the Kitchen from another door. Then a few seconds later I wake up.