My 2 cents on strategy.... Options

[FaG KillA]

The most common mistake I see new players make is not taking time when they move around. If you watch MOB, and some of the better players you will see that most of the time we are careful when we walk around. Hug the wall, look out from the doorway by leaning around the corner, crouch and lean when you can. Take your time and don't just charge around. Think when you are about to go in a room or area where someone could be and account for that. If you watch real military people you will NEVER see guys just bullrushing in somewhere and it is a good way to lose your life quickly.

Lastly I like to use the bait and move tactic alot. Hide somewhere and start shooting people, then retreat and move to a spot that allows you to observe the place you just left. Almost always someone will "come after you" an think you are in the same place.