My reply since the latest patch on zombies. These are negatives in my personal opinion. - In my opinion they are way to fast. They can run faster than the players. - There are to many zombies. - Once they are killed they should remain dead. - I still get hit in the back and there are no zombies present to be seen. - They still run through walls and half of their bodies are in the floor. - Some of them will chase you from one city to another.