First off this review may change in time, but with almost 100hrs playing I can say I'll put in many more. I used to play ARMA3 with some buddies but I use an AMD system and it just couldn't get passed 30fps.
So when this game launched yeah the servers were pretty overloaded and some fixes needed to happen for stability and performance but I can say even with a 5 year old pc minus the new video card this game runs butter smooth!!!!

As for game play this game goes pretty in depth with keeping track of your overall heath from what you eat,drink and what vitamins you're lacking, and it's a bit overwhelming at first but once you get the hang of it, it feels right in place. The movement is good and the gun play feels amazing for being in early access.
As far as the puppets (zombies) I wish there were more variations of them like runners etc and i'm sure the devs have some ideas in place for future updates. The mechs are the real pain and you gotta plan your approach to high teir loot like bunkers,air base etc.
Overall I would recommend this game to anyone searching for a hardcore survival game with lots of pvp and pve elements.

P.s They just added base building and even though it's kinda a placeholder in ways and they want to add more to this aspect of the game it feels good and building isn't a clunky mess like some titles are.