I played it for a month or so, I honestly didn't like the game much. The gameplay is just awful and unrealistic, the graphics are sure decent (For those who only play for the graphics quality). What I mean by unrealistic is that you need to get shot around 10 times to go down, same deal with grenades, unless you were previously hurt the grenades won't do much.
The player customization is almost none unless you pay with real cash or you have played for months and months nonstop, most of the good weapons are only buy-able with real cash.
The maps are very repetitive and there aren't much to be honest, the only thing I liked about the game is that there are different things you can do in it, whether it's just team deathmatch or deathmatch OR (I can't remember the game mode name) the beginner play mode where you just kill a load of bots and it starts increasing the difficulty which is pretty fun, but gets old quickly because of the fact that you never die unless they all shoot you at the same time.
It's fun for a while, then it quickly gets old. It's free to play anyhow.