Cannibal Ferox this one comes in a close second in the splatter department.
Cyclone) in almost what can be considered an action role. He is amongst the first to learn that the city has been invaded by the walking dead. Armed with a machine gun Stiglitz goes to war with the ghouls and heads for the hills in a battle of survival. Nightmare City proves to be one of the most entertaining and fast paced Italian zombie flicks ever made. The violence is so gratuitous and over the top. The zombies look more like burn victims then anything from a standard zombie film and they are also extremely agile. They climb, jump, run and use anything they can find as a weapon (including guns).
Zombieland, Nightmare City takes us to a carnival where we watch Hugo Stiglitz and his girlfriend fight off hordes of blood thirsty zombies atop a roller coaster. Heads explode, eyeballs are punctured, throats are slit, axes are buried into achy-breaky skulls and realism comes last. My kind of movie.