Assault- You're going to want to send 4 guys up to B in order to cause a distraction. While they are doing that the two remaining team mates should be over to A planting unless the enemy team is rushing A, then you would obviously plant at B. Once one Bomb is down the 4 that went to B or Vise versa should get to the spawn and keep the enemy dead.Now depending on your teams skill level and the enemy's skill should base on how long you take to plant the bomb. Example- if they suck spawn trap them, if they are good or equal skill go ahead and plant. Then Defend the bomb and win.

Defense- You're going to want two guys at both bombs while the other two (I would recommend your two best guys)run around taking out as many guys as they can. The two at the bombs should have equipment set out such as claymores, camera spike, or motion sensor. Decoys are helpful also. And they should be watching the entrances to the bomb and you should be set.

I hope that these strategies will help if there are any errors or better ways to play demo please reply i'd love to try new ways.

Thanks