This game is a true challenge as it requires a lot of time to be properly understood.
Forget all your knowledge in First Person Shooters since this game is very realistic and exhausting. Pardon, actually this shares some knowledge with other FPSs, like pulling the trigger to shoot your weapon; but that's all.
If you are one of those guys who are looking for a good way to harm themselves, go for it. The first hundreds of hours you'll play, you won't understand yet how to operate decently all the weapons (and still I don't know how to properly fly in the advanced helicopter mode and shoot with snipers). Probably you'll even be frustrated, but mastering this game is truly rewarding.
Positive note for the multiplayer, finding the right people will make you feel like you're a soldier.

This game is a true challenge as it requires a lot of time to be properly understood. Forget all your knowledge in First Person Shooters since this game is very realistic and exhausting. Pardon, actually this shares some knowledge with other FPSs, like pulling the trigger to shoot your weapon; but that's all. If you are one of those guys who are looking for a good way to harm themselves, go for it. The first hundreds of hours you'll play, you won't understand yet how to operate decently all the weapons (and still I don't know how to properly fly in the advanced helicopter mode and shoot with snipers). Probably you'll even be frustrated, but mastering this game is truly rewarding. Positive note for the multiplayer, finding the right people will make you feel like you're a soldier.