I've done the MP7. Just working on the AN-94 and Crossbow. Really love this weapon prestige thingy, 3 arch really put some thought into this and I like it.
I too think it nice, the challenges are linked to the create a class page (I'd like to think I'm the reason for that since I asked for something similar a while back, but I'm probably not) which makes knowing the challenges needed to complete so much easier. Props in that regard
As far as Gold weapons go I'm almost done with my knife and I have nearly all weapons halfway done. I'll probably have all weapons gold by January at this rate since I'm using everything so balanced. Snipers might be my biggest challenge, I can't hit anything with them
MP7, FAL, Combat Knife. just been messing around with others so I have not made a point to get anotherone gold yet.
So far just the MTAR. I've been focusing on getting perk and attachment calling cards with the MTAR, since I am use to the way it handles. Hopefully, with in a few weeks I will venture into the other gun lineups.
Not sure how you get gold weaopns but if its Completely prestige'n & leveling it out than I got Type 25 & Scorpion. ABout to get my Crossbow & MSMC
I got diamond on shotguns and launchers, all SMG's golden except MSMC. After I'm done with the SMG's I'll probably go for the LMG's next as i do not like many of the AR's.. Or maybe try to get it for the assault shield and knife