1. Put the search game type in your file share or get it readily available.
2. Go to the multiplayer main menu and hover over custom games.
3. Have a friend in a seperate player match game hover over find match with the session joinable.
4. Press Y go to your friends gamertag and press a to join his session.
5. While joining the game repeatedly tap a,if done correctly you should spas out of the game and end up in your own.
6. Invite friends to game and go to your own player channel and load the custom game.
7. To start the game press B and you will hear the countdown begin and the map will load soon.
8. Get kills and level up

iMagSs wrote does anybody know how to put unlimmited lifes SND..??I cant figure this **** out.

follow the steps he said but get the search file off of one of the guys hosting the lobby.
Go in their game, get the as a recent player, hit y, go over to recent players and click on them.
then go to player channel, custom games, and load their custom game, then save it as your own. You now have the modded unlimited lives lobby. Now glitch it to a custom XP lobby.

Rep if I helped <3 Have fun.
Or you could add my GT and get it off my file share.
GT: SavageSkyler