H12-4 for anon. Grab the Shu from support units, if you don't find a maxed one, ask in the thread for it. We can add you to let you use her.
All operators are M3'd except Ptilopsis (sl7) and module level 3 except Myrtle, Ptilo, Poz, and Ifrit.

Team notes

- Lumen should have been on S1, since his helidropping means he didn't have time for S3. Even Sl7 S1 has pretty good healing.
- Ifrit added good damage for the flying suicide bomb spawner in bottom lane, but a better Poz deployment after retreating her early could have done the job too. You can bring another melee or healer in her place, Honeyberry could do to help sustain the top lane.
- I messed it up by deploying someone else after, but using Ulpianus S3 as seen in the mp4 provided can completely nullify Damazti's execution. Use Ulpianus S3 before he reaches 50% HP in phase 2 (so he starts the skill and targets him, as seen with the hourglass on him), then when the skill is deactivated, he will dodge the execution, making it so no ops are lost. As you can see in the video, it cost me Ray, but if you do it right, or simply feed another unused Op at that time, Ray can solo 2/3 trillbies in one skill use, making top a worry free zone. I had to improvise, but as long as no one dies top the clear is very stable there.

https://arch-img.b4k.dev/vg/1733238734348.mp4

Map notes

- Deployment order is mostly freeflow in bottom path, since Ulpianus S3 will take all aggro each redeploy. However, make sure top is Thorns -> Ray -> Saria. This is for phase 2's corrosion hand map wide nuke to not aggro on Ray instantly and kill her with burt + corro proc + hand hits.

- At the start, I retreated Poz too late. Retreat her right after Ulpianus cleans the wave with S3, after he does so, Gladiia and him can clear the place on their own.
- I tried to block Damazti early with Cuora, forgetting there was a purple unblockable civilians man coming. This is because without scouting the civilians coming with him early, two will walk up to Ulpianus and let Damazti go. Shu S3 can salvage this but it's worth noting. It's fine if Ulpianus blocks him in front or behind, but absolutely he must be blocking him in a way that another operator below and to the right blocking later another clone puts them in range for him to hit two at once, his blocked one and that one.
- Try save cooldowns after each invul phase. The 1st phase of the boss is a race since Saria is getting corro'd, you want her alive to be able to swap to Cuora after the boss switches phases, since Cuora alone top dies to phase swap HP pool drain. Remember the boss gets damage res with each clone, so at the end you'll need more skills for the same result.
- Lumen gets helidropped once to top off Ray at first to avoid her getting possibly two tapped by the suicide bombers, but also to eat some so Ray uses her ammo on the spawner. Make sure she can one skill him, since they spawn far and will all home in on her, so three after the spawner moves instakill her.
- After the boss goes to phase 2, you can see blue squares around everyone, marking who explodes and gets a hand mob spawned on them. Wait for it to appear then deploy Lumen, that way he won't get a hand on him. Make sure you either deploy someone or cancel Ulpianus S3 after, since Damazti's 'all clones deal a hit of damage to last deployed op' will proc a bit after the mapwide hand + nuke skill and hit him for a corro proc and enough damage to instakill him.
- Use Ptilo skill if needed to keep Shu alive during the pool damage revive phase, then use Shu S3 to keep everyone up during the nuke if needed. She'll die to corrosion eventually, but with the team's burst you can finish the job before that.

If you have any questions still just ask. Good luck, I hope you're having fun with the game.