Type of Boosting HEADSHOTS/CHALLENGES
Step One: Join a cage match, ask to boost headshots and go 9 headshots and the other gets 10 than switch every map.
Step Two: If you have a friend, then keep searching and backing out of cage match games until it gives you {PLEASE WAIT} on screen than tell friend to join. This will force friend and you into same cage match lobby.
Reward: Headshots and Challenges

Type of Boosting Score/XP and Headshots
Need 4 Players/2 Players need to have guest accounts signed in
Step One: Have two friends and one guest account in a lobby
Step Two: Host will search {team tac} until shipment sabatoge
Step Three: Once you get it, have the other two friends join!
In Lobby:
Step One: Two players will be planting and defusing
Step Two: The other two players will be getting headshots off guest accounts
Step Three: Be sure to switch when game hits 10 mins left.
Reward: Up to 80k a game, up to 150 headshots a game.