Bleh, I never have those problems :P you have to be fast on the trigger and aiming to kill that camper.
halo players dont understand the concept of one bullet, accurate gun deaths.
they got use to dancing around each other with a whole clip and MAYBE killing each other.
there is nothing to peek or hide behind in their game. its all open world, simplistic geometric shapes.
you see something move and you get your giant crosshair to that direction and hold the fire button.
yawn.
spoon feed the low end gamers