I already have one class that's ready to do some carnage.

Insanity
No primary or secondary

Lightweight, Flak Jacket
Toughness, Scavenger
Extreme Conditioning, Tactical Mask

Smoke Grenade x1

Perk Greed 1,2 and 3

I've gotten a decent amount of kills in a ridiculous amount of deaths with this class. Though, I want to try something new. Anyone got something challenging?

4708806
I've got an extreme rusher class. Close range only.

Skorpion EVO w/Quickdraw, Fast Mags, and Rapid Fire (Rapid fire will boost the fire rate to 1,885 Rounds Per Minute)

Hardline.

Scavenger and Toughness.

Dexterity

4709562 I'll try this out for 5 games.