Well if you are a sniper about 30 but if you run and gun its about 50 to 7
20 kills with an ACOG scope on your gun
15 kills with a silencer
You have to get a certain number of kills with the mg4 light machine gun and it is the same thing as FMJ
tactical knife on a pistol. You can get it by getting I think 50 kills with that certain pistol.
As the knife isn't listed as either a weapon or equipment in the challenges, there is no way of telling.
1
You hav to pristege aND GET 10 kills wit a silencer on ure gun afta unlokin challenges
camp
The defult chalenges do as well as the gun chalenges but, all the prestige killstreak kills and presige gun kills do not reset. Titles and emblems do not reset -Add me if you want on Xbox Live my G.T is SXY LEMONz xXx-
You need to achieve 25 (24 with hardline) gun-only kills in a row. In MW2, Your Assault killstreaks such as the Predator Missile and the AC130 counted towards the 25 kills, however in MW3, you need to get every kill with your gun/grenade/knife.
I don't know 2 be exact :) But it is a good gun :)