GRAW 2 makes some additions to the game that broke ground in 2006, but the same can't be said about the 2nd.
Graphics: The graphics aren't identical to the 1st game but are similar. But many small things have been improved, the textures look much more sharp and the lighting is also done better. The explosions in the 1st were just crazy and Ubisoft upped the explosions once again and they're just stunning. It hasn't been long at all and the sequel came out in almost under a year so, the graphics aren't too out of the ballpark but they're still nice on the eyes.
Gameplay: The gameplay feels identical the guns have the same feedback and veterans of the ghost recons will still have their favorite weapons. The only real difference is the emphasis the game puts on using UAV's. They become important, aiding in finding your foes. They also introduce some other gadgets and vehicles which change the game but not signifcantly.
Sound: The music is ported directly from the 1st so you've heard the menu music in the 1st and that frankly is very annoying and old. The in-game music is nice though. The guns sound the same and the explosions sound better but as for the sound overall its not bad. It's nice with surround sound.
Value: GRAW 2 has a excellent campaign that is just a great experience it feels just like the 1st but it's just more memorable and has more action. But, it's over quick probably under 10 hrs.
Achievements: The achievements include you beating campaign on the hard difficulty and beating coop online. They're similar to the 1st only it's on the easier side.
Tilt: GRAW 2 doesn't do anything not seen before but the campaign is fantastic and the multiplayer is too. GRAW fans will love it and others will too it's easily reccomended it's just nothing not seen before.