Objective: Survive for 5 turns, or... defeat the boss 

Failure Condition: Erma dies

Recommended Echelon(s): AR/SMG, Dummy with parachute

Echelon Limit: 2

If you're strong and experienced, fight the boss for a quick win. She's not particularly hard, but I also don't expect people to kill her. So this guide will assume you're not going to kill her. 

The name of the game is survive. There's still traditional failure conditions such as losing your HQ or losing all your units, so be cognizant of those things. We have a few fairly hard to kill stacks roaming around, including a boss which can move twice per turn, a bit dangerous. Our strategy for this map will have us essentially stalling the boss via baiting it away, as well as baiting death stacks away. Alert AI means it might be a coin flip, but I'll try my best to minimize that. Let's get started.

To start off, deploy your echelons. I like to have my AR echelon at the top, while the dummy echelon goes to the bottom. Immediately parachute your dummy echelon over to the Heliport on the top right. That'll give you a small bit of AP for later, and bait the boss away. Next, swap your AR echelon with Erma. We'll want to take out some of the trash around our starting area. Move it to the right and take out the first enemy. Move it one more to the right, then up to the next enemy. We can move Erma to the right one node as well. This will be all the combat we'll actually do, so hurrah for that. End the turn here.

On turn two, move your AR echelon to the right one node, then Erma right one node. Redeploy the dummy echelon on the top left Heliport. You can end the turn here. If you take a fight at this point, you can retreat the fight. 

On turn three, move Erma back one node, then swap with the dummy echelon you deployed. Move her down to the Command Center, then the Heliport, then down one more node so she's at the very bottom left of the map. End the turn.

On turn four, we want to bait the enemy closing in on Erma away just for one extra turn. Move your dummy echelon down two nodes then right one node so it's one node away from a death stack. Redeploy an echelon at the top left Heliport. End the turn.

On turn five, move the dummy echelon down one node so it's on your Command Center. End the turn.

Once turn six starts, you should clear the map.

Video of me clearing this map