Objective: Defeat Devil Yurine

Recommended Echelon(s): AR/SMG, Dummy.

This map is very similar to the normal version. I dare say its almost the exact same, just with higher enemy CE values. Thus I will be copypasting a lot of what I said in normal here. No really, hard copypaste. Only the best quality of guides here.

This is a little bit of a disappointing last map compared to something like the va-11 hall-a collab. But what can you do? Anyways, our goal is to defeat devil Yurine, but she's a mile from us. Thankfully, it's a fairly simple path. We have our starting area that we can see and then a veiled area between us and devil Yurine. The places to unveil them are each of the Radar Towers, and they only reveal a partial amount of it. 

As I mentioned, this is fairly simple. Swap your echelon with Yurine and capture the Heliport nearby. You can let the one AP be wasted just fine. On turn two, head to the leftmost Radar Tower. This should unveil the rest of the map. If not, check the rest of the Radar Towers. Ouro should show up now and you can swap with her to get to the Heliport available to you. We do want to take this Heliport, as it can be fairly helpful with retrying the boss if you fuck her up, or even with repairs if you took some damage on the way over here. If you do wish to repair, try and take the fight with that dog echelon prior to doing so, as that can be a mildly difficult fight. Deploy a dummy echelon and then swap back to the Heliport to repair. After doing that, Devil Yurine should be in range for you to fight, so take the fight with her. She's more or less the same as the normal one, but with overall higher stats. If you'd like the extra achievement for the map, let her reach the shaved ice before engaging her.

Devil Yurine

She mainly shoots you while summoning additional enemies. Be sure to retarget your ARs by moving them back and forth when the enemies spawn in, so you're not overwhelmed by them.

She'll also stun two of your dolls in the back column. When she does that, she'll then pulse an AoE attack in the first two columns of your side of the battlefield. The way to avoid this is to actually move your tanks into the dolls that Yurine stunned. Since they're stunned, they can't move, so you're safe from the attack. Once she uses the AoE twice and the stun wears off, you can move your dolls back to normal.

Defeating her will clear the map.

Video of me clearing this map