This will require a coordinated team of 6 players.
First, camp in your spawn and get a few easy kills (a lead of 5+ is preferable).
Then everyone equip this class: RPG and Tactical Mask - that's all.
IMMEDIATELY upon spawning, look down and fire the RPG...killing yourself and preventing the enemy from getting any kills.
The Tactical Mask will help defend against enemy tactical grenades that are thrown at your spawn.
While some may call this cheap, it is within the rules of the game and potentially effective...ENJOY!
Why play the game with such a losing mentality? Good luck in that! As far as I am reading this could be potetial boosting for xp. Actually, continue doing this, that way you get banned and can no longer play!
This strategy is not boosting:
"Any user who colludes with another user to exploit the game for the purpose of gaining XP, prestige, game score, weapon level, or in-game unlock is subject to penalty."
You gain say 10 kills, then continually commit suicide. You win because of those 10 kills. Commiting suicide doesn't gain you XP, prestige, game score, weapon level, or in-game unlocks.