This weekend was shooter weekend for me, so no matter how far back I go it's still pretty bad.
First: Mw2, so i'll say Mactavish and Price
Second: BfBc2, Preston marlowe and the other guys
Third: Rainbow Six V2, Bishop and his squad
Fourth: Reach, Noble Six
I'll be riddled with bullets no matter what, though respectively it will either be an assassination, an assault, a takedown, or just sprinting right up to me, shooting me then smashing my face in.