This is easily one of the worst zombie-themed games I've ever played.
Supposedly, developers tried to make something like a squad-based survival simulator. The final product is not a simulator, it's not about surviving (if we're not talking about user surviving through the UI), and squad-based part is just pontless.
Every aspect of the game represents raw incompetence of the developers -- game is bugged, UI is ridiculous, gameplay is extremely boring (if you'll last more than 1 hour, like I did, you're supposed to be awarded with a medal), fighting system is just plainly lame.
The game has active pause (you can prace Space to pause the game and give orders to your survivors). Presumably, this was implemented to introduce tactics to the game. Alas, this effort was fruitless -- fights are boring and repetitive. Most of the fights are ending up in user, luring enemies into some trap and then activating it. There's no tactics to it, honestly, it's just a waste of time.
There's a ton of useless mechanics. For example, your character can randomly start bleeding after he was wounded. You'll be bleeding for the whole duration of the level (it won't stop), yet you won't lose any HP for that. Why was that implemented? Because it attracts zombie in a bigger radius around you. But since you're walking faster then they do, they'll soon forget about you and would roam around their location aimlessly (pathfinding is awful here too, by the way).
The weapon system is plainly lame -- you can only hold 1 weapon, and if you want to turn on some switch, you first have to hide the weapon, then use the switch, then take out the weapon again. Developers couldn't care less about usability, I think.
One of the bugs that I've found in my short session was inability to launch game in windowed mode -- all my efforts lead to a point where my inventory disappeared alongside with all of the texts in the game. I was unable to fix it, so, obviously enough, I've decided to just uninstall.
Will I recommend this game? Never. I may recommend to try it to people with really low self-esteem that are enjoying UI masochism and poor gameplay.
I'd rate the game 2.0 out of 10.0, and would NOT recommend it to anyone.