A fun, but challenging experience
In order to be successful you must command your squad well. The only problem is, your squad mates aren't so bright. If you want to just send them to a general area, and have them handle the rest, too bad. Your squad goes precisely where you ordered, and won't scatter for cover, making them sitting ducks. Luckily you or any of your squad mates can revive a fallen soldier. Unfortunately once your down, you get a game over screen. It would of been great to see a revival mechanic such as the one in Republic Commando. Since you get finished off rather quickly if you're not careful, you'll need to be behind cover in firefights, along with ordering your squad to get into cover.
The campaign will take you around 12 hours (varies depending on difficulty settings), but there's a gripping multi player to tackle still. The multi player goes up to 16 players and contains all the standard game modes plus a few. The most interesting one is the co-op. You can play with 16 players on a few different co-op missions that are not part of the single player campaign. If you download the bonus content, it'll add new maps guns, and co-op levels. The multi player may be the best part of GRAW if you really get into it.
GRAW is a great tactical shooter, that should not be missed by anyone that owns a 360.