Tons of potential, lack of content.
Right now, there is no campaign, but basically "showcases". I was just playing a "Combined Arms" showcase, and found it nothing but frustrating. Better when I turned the enemy AI down quite a bit The enemies are mostly a half mile away, and I have nothing better then iron sight view distance. No scope. Yet the enemies are able to pick me off with no problem, even though they do not have scopes either. They easily see me and hit me at distance, and through trees. The trees are thick, and I cannot see anyone, but they have no problem seeing me and killing me.
I checked backpacks, others inventories, to see if anyone had scopes, and nope. The only way to survive is to keep down, and let others, your AI buddies shoot the enemies, because I cannot see anyone, and if I do at a distance, I get one shot off, and they quickly line me up in their sites and kill me while I try to get my sites down from the recoil and retarget. Too hard, on the default setting. AI needed to be toned down for my preference.
It is as much frustration as fun. And not really realistic.
The controls are frustratingly complex. Multiple buttons for many different speeds (i.e. C for 2 combat speeds, SHIFT for sprint, W&S for 2 pace changes), and my man gets out of breath very easily. Like real life, which is reasonable, but coupled with the difficulty, just another frustration factor.
Controllers are only partially integrated, so kind of useless IMO.
Also, in ARMA 2 I could save as often as I wanted, but with this one, I can save one time in game. And must rely on autosaves for the most part.
I have a very powerful computer, but must use "Standard" for decent frame rates and smother controls. Very High and Ultra are slow and more frustrating.
And positional sound is not very good. You hear sounds, but you cannot tell where they are coming from. That is not realistic at all, and adds to frustration.
Like I said, I really wanted to like this, but at this point it is only OK. I may add edits if I find I judged this unfairly, or if they make changes, but right now, I am a little disappointed with this one.
Edit: I found the AI difficulty slider, and putting it down helped a lot with getting shot too much.