Anything but fricking Zombies. There are so many other types of undead out there that aren't Zombies that are also way cooler, but because our societies is obsessed with them, practically every game is pressured to have Zombies for the sake of Zombies, and it sucks because they realy have gotten old at this point. Skeletons? Wraiths? Ghouls? Revenants? Awesome, bring them on board if they fit the universe, but Zombies? Dear god no.