u dont unlock guns they give u guns at the begining of a mission then u can pick them up off the ground
You need to unlock every gun in a single category that has a special weapon in it for it to be available to purchase.
lvl 8
You unlock it at the end of the campain!
To get Diamond on any gun you have to get Gold on every other gun in the same group. So since PDW is a SMG (Sub Machine Gun) You have to get gold on every sub machine gun including PDW and then you unlock Diamond.
As Special Ops in MW3 has it's own ranking system you may unlock call signs in there however, they will not transfer over to the actual online lay as the criteria to unlock them is different.
Yes, with one of your unlock tokens you get each time you advance a level.
nothing its just a camo you unlock when you reach 14th prestige
First it is a PDW, Second it is designed for tank crews or military jobs with limited space and close quarters fighting so special ops do use them.
There is no best gun in black ops it's what suits you the best but if you can't find one that suits you try using the AK-47 with Dual mags and silence Semtex grenade Stun Grenades perks: Hardline Warlord Hacker I find this gun works on every map for me you need to be level 38 to unlock it.
there is no code to unlock the clickable button. you have to manually enter it every time
You have to get a certain amount of stars in the other special ops missions and it unlock them one by one till you get to echo
DOA -unlocks Dead Ops Arcade. 3arc unlock -unlocks everything 3(trey)arc! =.=