I was one of those that played it EARLY, it was very frustrating as I like Mouse/keyboard and it was not supported yet. It was in game but only in a rudimentary way. But even with the struggle to get a grasp of badly mapped (and again, unsupported at the time) controls I kind of enjoyed it. I was hoping for something Better then Dead Island, and in my opinion its much better. Combat is a bit odd, and yes I can see where some would not like, its more about how you go at it, then the actual combat. 1 zombie, kill it, 5, you need to position so you dont get attacked from all sides. it seemed satisfying enough to me, but I was (again I will mention it) struggling with controls, so maybe the difficulty was more then most would have with a gamepad. SO far its the closest to a Decent non ASSHAT DAY Z game.. I would like to see a GREAT PvE one.. DAY Z seems to be one of the best, to bad over half the players are asshats. The PvP is out of hand in that game.
I would suspect the controls have been cleaned up by now, and I will revist.. but the T-DAY sale kinda filled my plate, and recently discovered Craft the World and am a bit addicted so have not went back and seen improvements.