I just completed the game on Veteran this time around, and aside from getting stuck at places constantly, It was a breeze compared to W@W.
However, I'm staring at my achievements list and I have 4 left. One of them is kill 5 enemies with a single grenade in campaign. I look at that, then remember that grenades blow ass and just stare at it, as if it's just mocking me.
With it's 15 Gamerscore...