wasteland - try climbing on the broken house near the graveyard. you have to jump on the broken wall at the grave yard then run-jump onto the extended roof. or you can snipe from the spot next to the two MG guns. or jus find a camping spot in front of the cave and snipe many kids go there
invasion - if you spawn on the side with the tall grassy area, go straight until you reach a metal fence. move back a couple of steps and run-jump to get on top of the fence then run-jump again to get on top of that metal hut thing
karachi - try getting to the highest part of the map. and jus snipe from there
afghan - there is no real good spot to snipe because there are always enemies running at you. the only spots to get good sniping in is on the tall hill, middle shack thing, or in the cave
terminal - try getting on the roof thing where you have to climb the ladder. or jus camp either side of the hall. or jus camp the cockpit of the plane
