Hi, here is my mini review of NS 2:

The strategic depth of this FPS leads to very intense battles in which you don't kill opponents aimlessly, but rather as a part of the larger tactical scheme of your team. The two distinct races offer enough diversity in playing styles so that everyone can find his perfect match, although you will often need to switch roles according to the immediate needs of your team. Cooperation with your teammates is essential, much more so than in most games, and how well you assist the commander is a critical element of victory. As for the commander, the game is played as a RTS, a very dynamic and interactive one.

I wish you good luck, it's an awesome game. =)