First... Glad you are having some fun playing.
This game version was from 4 years ago.
The New version I have been working on has Hordes until the end and yes, it strays from only typical Zombies but the units are More Fun.
It is not really intended to be "Resident Evil" or any other Zombie Game. It has gone through many changes that will be challenging and I hope More Fun, regardless of what ever Faction anyone prefers to play.