PLEASEEEEEEEEEEEEE???

BAsically SnD Tac And u keep planting n defusing til u get strafe chopper then shoot down strafes rinse and repeat

Strafe Run boosting - This type of boosting requires =
1. Two controllers.
2. Prefferably a mic.

First, make sure you have Assault Strike package selected, with the killstreaks Sentry Gun, Strafe Run and Assault Drone. As you're primary select the gun you wish to boost (MSR in my case) and as your Secondary make sure you select the Stinger, or any other lock-on launcher. NOTE: If you do not have any of the killstreaks available, some people may let you use alternatives including Attack Helicopter, UAV etc.

5) Sentry Gun
(9) Strafe Run
(10) Assault Drone

and Perks:

1: Blind Eye
2: Hardline
3: Anything you want.

How to
Make sure you're guest is also signed in, and wait for the other member to invite you. The next stage is pretty easy, when it is not you're turn, just let the other people in the lobby do the work, all you need to do is spawn you and you're guest and lay back. This technique takes around 15 minutes, so go make a coffee. (You will finish 0 kills and 7 deaths, don't worry this is nothing.) When it is you're turn all you do is spawn everyone, run to the oppositions spawn, kill three of the team who are NOT playing with headshots, 1000xp a headshot, and plant or defuse the bomb. NOTE: Before planting or defusing, with any spare time you have, call the killstreaks you have made in and let the remaining opposition player shoot them down and if they have any killstreaks they will let you shoot them down. Knife the sentry, shoot down the helicopters and knife the assault drone. This technique is sure to earn you 50,000 XP a game.