(adsbygoogle = window.adsbygoogle || []).push({}); 1. put heroic difficulty single player campaign with skulls of your choice

2. Go to mission sword base mission start

3. Go to the place were the air strike gun is at

4. take a step back to check point

5. fire the gun and get a killionaire every time

6. revert to last save
[ame]https://www.youtube.com/watch?v=g2K-Q28Wahc[/ame]

after you hit the check point you press start and there is a revert to last check point

great metheod but if you use it past any gold commendation it wont be effective anymore... still wonder whats the best metheod to boost

look at my other thread it has all boosting methods

will give this a try but has anyone been banned doing this???