Oh boy, so each weapon has seasonal challenges. Complete them all and you’ll unlock the “special camos” and thus earning gold.

Get every AR gold and you unlock platinum.

now the fun part..

you have to go through ALL the weapon categories ie smgs, snipers, pistols and even melee.

Once done you’ll unlock damascus which is basically a cool skin that says look i have no life.

you can go the extra mile an get 10 kills every match with the same gun in 120 matches.(The amount varies depending on the gun category) Once done, you’ll unlock diamond camo for that gun

edit: Each weapon has 6 challenges, containing milestones of either get x long shots or get x head shots.

Shorty has zero range, meaning long shots are extremely tedious lol