Pros:

A unique CI mod.
Cool pics
What can I say? Its just awesome..

Cons:

Lots of cons
Animations look weird..
Needs More diffrent types of zombies, Poision, more textures etc..
They all look the same!!
Fast zombie has a weird headcrab

Conclusion:

I didnt like how there werent alot of types of zombies. But if you could polish it more I can change to a 9