This should be Game of the Year, it's that good.
Many people who are new to this game complain that it is too hard. This is true, many people, myself included became frustrated with this game. But the good people at Incognito made "leveled" servers so that when your new to the game you can choose to play in official ranked servers that only have players that are also new to this game.
The best part about this game is that just when you think you have this combat system down, when you think that you know the best way to go about getting the highest score, you will rank up and be forced into higher leveled servers and find that there are much better ways to get the highest score.
The ranking system in this game is easy to understand, points and rewards are needed in order to advance in rank. There rewards needed for ranking are not impossible to get and most of them are easy to get once you have a minor grasp of the game.
There are other rewards in the game that are not needed in order to advance in rank and a few of these look near impossible when you see what is required to get them. However, they are not difficult. Those rewards just require that you actually have a game plan for getting them.
Overall this is the best online shooter that I have ever played. The only thing missing is a one player story mode which is why it gets a 9.5 instead of a 10