Objective: Defeat Boss

Failure Condition: Boss reaches marked Radar Tower

Recommended Echelon(s): AR/SMG, Dummy with a Parachute fairy, Dummy (x2)

A parachute fairy is pretty helpful here, since you can gain some good AP with little investment. If you don't have one, well, I'd recommend having RO take the Heliports on the left. It may stall some of the movement here, but it should still work overall. Regardless of when you do it, we do want RO to head over in that direction. Aside from that, I'll get on with the parachute strategy. 

The idea for this map is that we want to bait away the difficult enemies from blocking our path to Grey. To do this, we need to have two echelons be decoys so our main echelon can sneak past them. To do this, we need to have echelons in the left and middle pathways to Grey; they'll be our bait. Our main echelon will come through the rubble on the right in order to get past everything. So, we need to grab the explosive charge on the right, or grab a HOC. Grabbing the explosive is easier, so we'll go with that. Let's begin.

To start things off, we want to deploy a parachute dummy on the left and an AR echelon on the right. First thing you'll do is parachute over to one of the Heliports on the left then move to the node connecting to both of them; this lets you surround capture both. Next, move your AR echelon down to the Heavy Heliport on the right. Move it to the right, down, right, then down again. End the turn.

Turn two starts, and we want to start moving our AR echelon over to the middle of the map with the explosive. Move it to the right and grab the explosive charge, then deploy a dummy echelon on the Heavy Heliport you moved off of. Swap the two, then have your AR echelon move to the left four nodes, then down to the left one node. Deploy a dummy echelon at the Heliport below RO. Swap the two and then have her move one node down. End the turn.

On turn three, move RO down one node, then swap her with the dummy echelon there. Move your AR echelon to down left one node, then right one node so it's next to the rubble. Toss the explosive charge on it. Move RO to the left four nodes. Move your dummy echelon down left two nodes. End the turn here.

On turn four, we can set up all of the bait. Move RO down one node, then move your dummy echelon to the left one node. Now, move your AR echelon down one node, then to the left one node. End the turn here.

Turn five is just taking your AR echelon to the boss to fight her. Winning the fight clears the map.

Video of me clearing this map