Start in Theate - invite your friend.
Rapidly swap theatre to player match until friend black screens ( he counts to 1-2 and then says stop)
You stop after he counts 1-2 seconds of being black screen you stop and you should be in a party by yourself - if you're not you did it wrong. Try again.
If he's gone, it should come with an error, Click "A" then a circle load will pop up: Tap "B".
Quickly go to Local, Solo or whatever it is - Create class, hover over a gold camo.
Gives you error code: Click "A". You'll be in Player Match. Swap to Private. Modify your custom classes to what you want - then load up Private game and end it right away. Get your friend to invite you to a player match lobby - start up the game and get 1 kill and 1 death. Back out or finish the round. You now have your custom classes that you made, even with guns you can't obtain - or camos.

what lobby do you switch to do the all camos anything glitch. do you start off in Theater mode then witch back to Player match and back and forth till it works?