two, I got as good as I am from personal experince. I can take out a basic infantry with a pistol alot. It's kinda cool actually, I'm also good at getting corner shots with the sniper rifles.

Currently, I'm trying to see how to use the gernade launcher at it's best. So far, City is a good map for it if you cuck gernades off the bridge, flame tanks can't even hit you!

Oh, always move when attacking, if you both staff in the same direction, you should notice head shots are easy to get since you both go at the same speed. But try not to do this because they also get the advantage.

All I can really say it's personal skill that I gained since I played QWTF and TFC.