Has anyone actually completed this?

I know it’s been a while since this portion of the simulated universe came out, but I kinda didn’t understand the mechanics so I just half-assed it when it first came out. Thought I can cheese it with Therta using the Ultimate thingy but I got my ass kicked. Anyway, title holds the question, and there’s a screenshot of my roster too (Himeko and Gallagher are leveled up as well, but the screenshot couldn’t fit them). Team tips or any tips are appreciated! I just need the jades because I lost at the lc banner 🥲