I've prestiged my guy twice so far.
have got gold camo on the mp7, pdw, and msmc, and the scorpion is more than halfway to gold, need to finish it off when i unlock it again. then i just have the vector and the 3 round burst chicom to work through so i can unlock the diamond camo for the smg class
gold camo is pretty straight forward for the smg,s and you will just about have the gun maxed out on level 2 prestige by the time you hit gold, at least thats what i've found
you need 100 headshots to unlock the 5 remaining camo, and those challenges are 20 double kills, 10 bloodthirst (5 kills in a row using only the primary gun), 150 kills with no perks, 150 kills with no attachments, and 30 revenge kills
as soon as i hit 100 headshots i ditch all the perks and attachments and work on the 150 kills, and once thats done i'll finish off whatever is left. the bloodthirst is the hardest to pull off, especially with no ghost and no suppressor. also might be easier with a different game type besides FFA.
first weapon prestige allows you to add clan tag to the gun. 2nd weapon prestige allows you to add your emblem to the gun. i am pretty happy with the different prestiging levels in this game. i like being able to work on the gold camos and being able to keep leveling my guy at the same time without losing it all.
also, when you go to search for a game, hit find match, then the blue X on xbox to set search preferences to best.
i just changed the option lastnight and the game seemed to run much smoother, with better connections.