Scar w/Grenade Launcher + Akimbo Rangers (1887's when I get them + throwing knife + stuns
with Marathon + Lightweight + Commando Pro
=
You can do anything...anything at all...like, run to top of the really high plane wing on (dam I forget the map name, the one with the crashed plane and cave), get low, snipe the entire other team running for that first bunker, then anyone who gets away you can jump down like 100ft, sprint into the bunker, and blast them from behind.
I killed the entire other team in 10 seconds last time I play, it went, 2 headshots, sprint, blast two guys with shottys, and hit the last guy with the throwing knife.
Im batman!