Personally (as of the time of writing), my favorite tactical shooter on the market. In my opinion, it bridges the Arma and Battlefield gap excellently (though leaning more towards the Arma side), with large, lively battles covering a variety of locales and factions. Guns by and large handle well, and there are many ways to enjoy the game. It isn't a perfect experience by any means, but it is great at what it does.
TLDR: It's an easy, approachable milsim/tactical FPS with a wide variety of gameplay styles that is easy for experienced and new FPS players alike to get into. Main downsides are you might not always get the chance to play exactly what you want to play in terms of faction or weapon choice.
So, the cons first. While most weapons handle well, there are definitely some that people agree do not--one faction actually had its primary weapon changed due to community dislike of its previous standard issue rifle. The suppression and recoil system is polarizing. While I personally can find something to enjoy in almost all factions, some factions definitely get stale due to overplay (the two American factions imo, as well as Western PMC's). In addition, for a bit of "suffering from success," at peak hours, it can be difficult to get into any match, let alone one you want to play--servers often fill up, with long queues. When the queue advances, it's probably because someone else left the match for a reason, and with the faction overplay problem, it is little surprise that oftentimes these peak play hours often have some of the most overplayed factions. There is a lack of both cosmetic and item customization. You use your faction's available weapons.
Now that we got that out of the way, the good. The variety of both real world and fictional playable factions are fun, and while some factions overlap in terms of gameplay, many others are totally unique in terms of gameplay and appearance, and you'll find something to enjoy in all of them (Personally, my favorite factions right now are the Irregular Militia Forces, Turkish Armed Forces, and Middle Eastern Alliance, with some others standing out). Matches feel large and lively, and you can sometimes tailor your gameplay length (Random Advance and Secure matches tend to go by significantly faster than Invasion matches). There are two popular game modes, and usually you can find either whenever you want (though RAAS is the easiest to find).
There are a variety of ways to contribute, from infantry fighting, ground vehicles, flying, or ground-based support such as mortars, base building, or just driving a logistics truck. On that note, there are many ways you can contribute to the team if you're not good at FPS games--medic is not just a powerful class, but easy and fun to play, in my experience. All teams can use help in building bases and transporting logistics (whether via trucks, APC's, or helicopters). And while harder, squad leader can be a rewarding way to contribute and win matches, even if your deathmatching skills aren't to par. Map, game mode, and/or faction voting is in place on many servers, allowing you to customize your gameplay experience from match to match. In addition, I personally find most servers to be well moderated (at least in peak and near-peak hours--early morning and late at night, it can be a bit dicey). The community is friendly as well, happy to teach new players, and people will stick their neck out to save you. And lastly, from the easy matchmaking, preset objectives, and variety of skills, this game is one of the most accessible milsim and tactical FPS games on the market, really only up there with Insurgency in my mind
Overall, I would recommend this game to anyone looking for an approachable tactical FPS, at least on sale. I think that you can enjoy this game with friends even if you have a minimum of FPS experience.

Personally (as of the time of writing), my favorite tactical shooter on the market. In my opinion, it bridges the Arma and Battlefield gap excellently (though leaning more towards the Arma side), with large, lively battles covering a variety of locales and factions. Guns by and large handle well, and there are many ways to enjoy the game. It isn't a perfect experience by any means, but it is great at what it does. TLDR: It's an easy, approachable milsim/tactical FPS with a wide variety of gameplay styles that is easy for experienced and new FPS players alike to get into. Main downsides are you might not always get the chance to play exactly what you want to play in terms of faction or weapon choice. So, the cons first. While most weapons handle well, there are definitely some that people agree do not--one faction actually had its primary weapon changed due to community dislike of its previous standard issue rifle. The suppression and recoil system is polarizing. While I personally can find something to enjoy in almost all factions, some factions definitely get stale due to overplay (the two American factions imo, as well as Western PMC's). In addition, for a bit of "suffering from success," at peak hours, it can be difficult to get into any match, let alone one you want to play--servers often fill up, with long queues. When the queue advances, it's probably because someone else left the match for a reason, and with the faction overplay problem, it is little surprise that oftentimes these peak play hours often have some of the most overplayed factions. There is a lack of both cosmetic and item customization. You use your faction's available weapons. Now that we got that out of the way, the good. The variety of both real world and fictional playable factions are fun, and while some factions overlap in terms of gameplay, many others are totally unique in terms of gameplay and appearance, and you'll find something to enjoy in all of them (Personally, my favorite factions right now are the Irregular Militia Forces, Turkish Armed Forces, and Middle Eastern Alliance, with some others standing out). Matches feel large and lively, and you can sometimes tailor your gameplay length (Random Advance and Secure matches tend to go by significantly faster than Invasion matches). There are two popular game modes, and usually you can find either whenever you want (though RAAS is the easiest to find). There are a variety of ways to contribute, from infantry fighting, ground vehicles, flying, or ground-based support such as mortars, base building, or just driving a logistics truck. On that note, there are many ways you can contribute to the team if you're not good at FPS games--medic is not just a powerful class, but easy and fun to play, in my experience. All teams can use help in building bases and transporting logistics (whether via trucks, APC's, or helicopters). And while harder, squad leader can be a rewarding way to contribute and win matches, even if your deathmatching skills aren't to par. Map, game mode, and/or faction voting is in place on many servers, allowing you to customize your gameplay experience from match to match. In addition, I personally find most servers to be well moderated (at least in peak and near-peak hours--early morning and late at night, it can be a bit dicey). The community is friendly as well, happy to teach new players, and people will stick their neck out to save you. And lastly, from the easy matchmaking, preset objectives, and variety of skills, this game is one of the most accessible milsim and tactical FPS games on the market, really only up there with Insurgency in my mind Overall, I would recommend this game to anyone looking for an approachable tactical FPS, at least on sale. I think that you can enjoy this game with friends even if you have a minimum of FPS experience.