I started to watch this today... Well I ended watching the full thing hehe... If you like violent zombie killing well this is a good choice
BUT be aware, this anime actually one hell of a twisted humor that is very graphical in many episode, so if your not in adult situation as short as they are you may not like. But it actually made me laugh quite a few times hehe.
There is also a small character evolution, nothing big but it make it more interesting.
Personally I really enjoyed it, lit of violence, action if I can say =)