Objective: Capture enemy Command Center.
Recommended Echelon(s): AR/SMG, Dummy
You have two routes on this map. The smart route where you get the map over in a few minutes, or the longer one that'll actually give you an S rank.
Since we're talking about just clearing the map and not farming it or anything, we'll go for the smart route. The smart route is to make a bee-line to the enemy Command Center and capture it. Yes, you'll fight the red Golyat. It's a single one and it's at the end of the map. Turn off heavy damage protection in your settings tab and let it blow up on you. Boom, map done.
Video of me clearing this map