Here are some tactics i use when playin'....
1. If u know the area, use it against your opponets!!
2. If u own any style of ghille or 3D camo suit, use IT to ur advantage.
3. If you think ur in an area were ur comfortable, dnt move! Dnt get up and walk somewere, because it will make noise and attract attention to u. Stay put and let the opponets come to u.
4. If theres an open or back way, use it! It will give u the art of suprise and the edge over the competition.