Fun but you will die alot
Gameplay: Very good and also very hard. It will keep you entertained for weeks though.
Campaign is very fun and worth your time to play through.
Online is now basically dead because the game came out in 2006 but that shouldn't shy you away from buying it.
There is also a coop mode with a series of missions for you and a friend that can be played online or offline.
This is also not a first person shooter but it sort of feels like one. Commanding your squad is a great feature because your in control of what you want them to do but the AI can be a bit frusterating when your men are standing in front of some guys but they won't shoot because there in stealth mode.
Overall this is a great game that any shooter will love.
Now you can find GRAW used for around 10 bucks now and thats a steal for this great challenging shooter so if you want to play a very difficult game with a great story go to the local store and get yourself a copy.