1. Go to split screen
2. Go to infected
3. Once timer starts kill your second controller
3. Bring second controller to first player or first player to second controller
4. Drop tactical insertion
5. Kill second controller and repeat.

[If you die or are selected first you can just back out of the game. Also, this can give you nukes without needing a nuke weapon. Plus side to this is that it does not count towards your KD so you can use a second controller with status on it and it will have no effect same if you die. If you stay the entire game you get a higher WLR.]