Wasn't impressed with the game too much.
Weak story that started off strong, but never really went anywhere or did anything interesting. Many of the characters had some sort of opportunity to really create something of a good story (eg. half-Korean character) but not much was done with the there. Stereotypical redneck southerners who simply can't keep their cool, along with angry guy, chick who's scared to kill despite the Koreans gunning everyone down.
Adding to above, the atmosphere just wasn't there. I thought we'd be improvising explosives, breaking into Wal-Marts to steal ammo & Ruger 10/22s & using insurgent tactics against an enemy who outnumbers & overpowers us, but there was really none of that. The mass grave helped a bit, but not much. There's nothing like the opening sequence throughout the game that really sells the story much, or the subtle moments that really create an atmosphere.
The gameplay was just COD copy and pasted, but with even more scripting that on occasion screwed up. There's no real Freedom Fighters style guerilla warfare (open-ended with objectives that affect everything), no Red Dawn style warfare (guerilla-stealth tactics & insurgency ops), just generic COD-style shooting with a severe ammo cap, terrible teammate (and enemy) AI, tank levels which are boring as hell, and enemies who can kill you 9000 times over since they cheat.
The story itself was short as well. I don't know how you have an excellent bridge level, and instead of following that up with something even cooler, the game just ends there. Nothing after that. Not exactly sequel-worthy material here guys though I hear Crytek is doing the sequel, so there's some hope.