This game is great. The developers realized that instead of making a 12 hour game with about six hours of pure repitition, they decided to cut out the filler and serve the tender meat only. This game is short, but that is not a knock against it. You'll appreciate the fast pace and the tense situations. These are the most intense cutscenes/pseudo-cutscenes in any game, and they may play with your emotions at times. It's a game you want to play for presentation alone.
The bad is that this game is TOO fast. It's wham, bam, twist, end level. It borders on stressful, since you really never stop moving for long. Another issue that new players won't realize, this game is COD with new guns. The bad thing about this is that instead of the ultra-high tech of a game like GRAW, this game feels like you are limited. At times when things get hectic, you just might wish you had a really cool helmet.