First of all, we all need to remember that this game was actually made for mobile devices and this is one of the reasons why I won't judge it as harshly, I suppose. The question, however, is do I recommend it? As you can see by the big symbol over this "review" I do. I do, but to a certain type of people.
Firstly, if you are a big (so called "hardcore") tactical strategy player ARMA Tactics is not for you. It's simple, easy and fast. But, if you are like me and are quite new to the genre it is a good starting point.
As far as graphics go...they're pretty bad for a PC game (again, remember that this is a port of a mobile game) but they get the job done. You don't need insanely good graphics to enjoy this type of game so that's all I'm going to say about that.
Gameplay is what we are looking for here. Is it good, you ask. It's...decent, I say. It doesn't require some amazing set of tactician skills. You basically move your squad around, shoot some people, heal if you need to and you will rarely need to heal if you put some thought into it. What I like is that the game gives you good feedback. If there are enemies around you, you see an indication on your screen that shows you whether he's in line of sight, the hit chance percentege and you can click on the bullseye to see where he is. When you finish a mission you get rewarded XP to level up your team's skills and credits to buy different weapons, medkits, grenades and the likes, so there is some progression.
Sound is decent, again. The voice acting gets weird sometimes and I'm astounded by how much one of your soldiers sounds like Bear Grylls. Other than that - silenced, unsilenced gunshots, grunts and moans and other battle-related sounds.
To sum it all up, it's not exactly a tactical game, more of a "squad control simulator" but it's decent for newer tactics gamers like me. I haven't encountered any major bugs but I guess, seeing the other reviews, I might have been lucky so far. So yes, I can recommend it to newer players but if you're a veteran tactical game player stay away from it.