After you unlock all the guns from one class of guns like LMG's then you get a classified weapon.
The Call of Duty Wikia has a complete list of the Call of Duty Black Ops weapons from the related link
one is 3ark intel= all weapons
You get all the weapons of one type (Like for example Snipers) you get them all golden and then all that type of weapons have Diamond if anyone wants to talk about black ops 1 black ops 2 or world at war i know all the secrets hacks glitches aand everything of them contact me at andregoodarzi@hotmail.com
you get a trophy
You HAVE to LEVEL up and BUY them with COD points.
Nothing
To get diamond camo on Black Ops 2, you will need to all of the weapon camouflage for each gun. Once all of the weapons are unlocked, the diamond camo will be available for use.
To get diamond camo on Black Ops 2, you will need to all of the weapon camouflage for each gun. Once all of the weapons are unlocked, the diamond camo will be available for use.
There is no cheats to get all weapon in black ops. Or you could hack your way through but i wouldn't do it cause that's called no skills. But other then that, there's no cheats.
one, like all other weapons
To unlock all the Call of Duty Black Ops weapons you must do numerous things. First, you have to rank up in order to purchase the weapons. Next, you must purchase the weapon with your COD points you gained in-game. There are some classified weapons that are available in the menus. To unlock that specific weapon for purchase, you must purchase all the weapons in that category in order to purchase that weapon. Example: There are 4 snipers and one is classified. Purchase all 3 snipers and the last one will be un-classified.
you can't actually hack into it. you just have to level up all they and unlock as you go, sorry