Sniper (Advanced):
Intervention FMJ
Any Hangun with akimbo or tac knife
claymore or throwing knife(preferible magum)
sleight of hand, OMA
stopping power
ninja
.....The intervention, good sniper most of the time 1 shot 1 kill good for quick scoping, use claymore to set up your spot( there you should stay about 5 kill, then move to another close spot, place claymore on old spot cuz people with try to go to knife you.Hanguns. cuz are fast swap for close range and people wont expect that, thats why akimbo for more damage.........
Riot Shield 1 :
Riot Shield
Hangun tac knife
c4
flash
scavanger
danger close
commando
(A)...... You should distracted people with the riot shield and a teamate should come to kick his/her ass.
(B)....If people come close to you swith to your handgun tac knife and your commando, you will be like a cheetah (fast swap + faster melee + longer melee range + distraction..riot shield = cheetah)
(C).... If you are "chase" by someone try to go around a corner place a c4, double tap x or square to explode the c4...
(D )..... Flash your oponent ( flashes stress A LOT ) throw a c4 double tap x or square and BAM!! shit over...
Riot Shield 2:
Riot Shield
Any Secondary
Throwing Knife
scavanger
lightweight pro
any perk
(E)... Like someone said before, people will think having a distance is better when facing a riot shield, thats why a throwing knife, if you kill somene dont waste your time looking for your knife u got scavanger dude, lightweight PRO (faster aim after sprinting)....
Another Nuke possibilitie without been a noobish or a fag:
Any assault rifle that your are comformable with and silencer (duh)
G18/silencer (duh)
claymore
smoke
scavanger
coldblooded
ninja
final stand
.....Assault Rifle are the best weapons on the game cuz they can be a sniper with thermal scope, a rpg with a grenade launcher, a lmg with extended mags ( well a bit

), a stinger if use correctly, a shotgun even , and with the silencer enemies will frustated not knowing where do the bullets came from. The G18 because of his high rate can take multimple enemies at a time ( not to make a double or triple kills, but if your run of of ammo and there is no time to reload the G18 can help alot. Smoke will confuse enemies, because some think people use smoke to pass through it, but NOOOOO, use smoke to flank enemies. HOW?. Throw a smoke go all away around and BAM!! (again) death. Claymore can rack you kills because you dont need to see an opponent or randombly detonate a c4, claymores can be like and automatice c4. And you can place TWO with scavanger, so every time you kill someone with claymore or (A) go to there and get your package or (B) kill another one to get a package. Scavanger, Coldblooded, and Ninja will make you Stealth because you will not will have to look for another weapon but for the blue packages : ) and Finals Stand (if you start bad) can give you another chance.