6 people (works better with people you know and trust)-Note this will not work if you dont have 6 players
Any gamesave you want to play (Most common one is the modded CTF gamesave, you can get this on cod TV)

This lobby is for people who want to get diamond guns
One shot one kill medals dont count
Bloodthirsty Medals dont count
Only guns you have unlocked online will count
You might not level up in this lobby (The lobbys that I Host its a 50/50 chance some people level up some people dont)

Step 1- Have 1 person (Player 1) go to the First multiplayer lobby with Public match, League Play, Custom Games, Theater. Make sure you have this person hover over public match or this wont work.
Step 2- Have 2 people go into custom games (Player 3, Player 4) Host of that lobby will be player 3 the other person will be player 4- Note make sure there is nobody else in the lobby besides Player 3 and Player 4
Step 3- Have the person who is hosting this lobby (Player 2) go to system link, have him hover over create game and press Y, now he needs to hover over (Player 1) and press X and spam A, if done correctly he will be placed into a lobby without his prestige and no level-Note he will be in a lobby by himself. If he joins player 1 REDO this step.
Step 4- Now the person with no prestige or level (Player 2) will need to leave that lobby and go back into multiplayer (He should now have his prestige and level back, if he doesnt you need to do Step 3+ again)
Step 5- Now He needs to invite the host of the CUSTOM GAME (Player 3), then he needs to invite the other person in the CUSTOM GAME (Player 4)-Note this wont work if the Host of the CUSTOM GAME does not join first. (Both of the players should be kicked out immediately when they join if they dont Repeat Steps 3+)
Step 6- When Player 4 joins and gets kicked out he should be put into his own CUSTOM GAME now Player 2 will need to join that game or be invited, once Player 2 joins have Player 4 leave and Player 2 should put the lobby on INVITE ONLY, MAX PLAYER LIMIT 6, then invite all 6 people
Step 7- Now that everyone joined the lobby the host will need to load up the game save and put on BOTS-Note that if everyone is not in the game and you set the game up it will be frozen at NEED MORE PLAYERS and it will never start.
Step 8- After the game have everyone back out and do it all again.

Make sure no one hits Create a class or they will be kicked out of the game and you will need to do all the steps over again.
You might want to make sure everyone has a tac insert if you guys are playing the Modedd CTF Gamesave. (If not 4 players will spawn in a Heard of Bots and it will be hard for them to get out)

Make sure everyone in the game doesnt go over 10,000 score (If you want to be more safe make sure people stop at 9,500)
Once youre done with the lobby go into regular games and lower any gun KD that is above 3 down
Make sure you dont only get headshot if you only have headshot kills on a gun you will be more likely to be banned.