I beat the game last night using the second difficulty. I don't care what you say, the game if f*cking HARD!!!!
Especially when you get wounded you get blood in your HUD so you can't see what the hell is going on so you have to run away like a poosay to recover.
There are some parts of the game (ei where you're trying to take the White House back from the Russians) where you have keep trying different methods over and over again.
The story of the game goes like an action movie. First you think it's going to be about a terrorist, then the game's about an immending WW3, then it ends trying to beat som turncoat general that is hell bent to start World War 3 or something. It's very confusing.
My favourite level is where you're in a convoy in Suburban DC and you have to clear the houses of "Tango's" Then you have to clear out restaurants and fast food joints and stuff. You get to use a Stinger, Thermal Rifle, Century Gun and control a Predator Drone all in the same level.
I splooged 40 times.

I'll probably play the single campaign again.
But now on to playing losers online. I tried a match last night and got teamed up with a dood that was already Level 29!!?!?!?!?!? What has he been playing nonstop since 1am?