So just what is our tactic's:
Run Run Run. Run even before you know where you are. I got many easy kills on people comming back from the death, just standing there waiting
to go right back.
If you are camping and waiting for the kill, shift position after every kill. This will make it much harder to find you. I know for sure, that I don't stop until I have found the Camper.
I love to
place M-18 Claymore mines all over the place. Somebody may argue that the number of kills you could make with the extra ammunition, is far greater than the two potential kills. Well, placing Claymore mines makes your
opponent more carefull. Making them stop and stopping is just what I want them to.(Wam bam thank you mam.). I Once heard somebody saying "Is that Gung Ho on the top. Watch out for Claymores". That felt good.
Gung Ho
Watch your bagground!
Some guys are easier to spot than other.

Many people lay on the top of a hill. Thats not smart. You are easy to spot, because you are
a bump of extra pixels on the hill.

Ok you learned that you should never lay on the top of a hill. But watch your back ground

Sometimes you can have more luck in finding a good background, This is actually fine, but the next one is even better.

You end up beeing a single pixel. That is hard to find.
Gung Ho
Hiding
So just where can you hide. Some guys like running around with with the SAW, and the finger glued onto the Trigger, or running around with there Knife out of there pocket. Well I
personally think they should play Quake instead.
But I must vote against just putting down your tent and start camping, I hate Campers.
It is a good idea to find some spots, where you can lay down, and put some fire into those bastards running around.
You can shoot down Palm trees, and lay behind them,
The only sad thing is that you cannot shoot through the top of the tree.
This is Camping if you lay here through all the game, Move from spot to spot. Because if you shot the same guy from the same spot. he might end up spotting you.
(I have a confession, if they are running around playing rambo, I start camping, staying put and picking them off one by one.)

They are also a excellent place for Claymore mines, as you can se it is impossiblr to see the claymore even at 22 meters.
Gung Ho