Once you can carefully conseal yourself, you should be able to fire missles around corners where enermies cant see you (they can only see ur little missile flying towards them).
Key to this GM from the strong ones I have encountered are either jumpers that hang middle/long distance, or ones that hides and shoots while pivoting left and right. All they do is pick you out and start sending those missiles to you, they seldom use machine gun or laser even at close range. (they would run away and not take you head on) If discovered they would fall behind another unit or duck for cover for a new hiding spot. An A rank unit might give up chase on a C rank, but if they do pusue you, the attacker becomes vunerable and your other team members can blast him to bits.
Master both techniques and you will be able to get to take down any units in the game. It is not uncommon to see one of these to come first in a 4v4 point match.
Last edited by RacerX; 04-19-2009 at 08:52 PM.