Been playing around with guild raid strats.

Solo Ember did 3.2m damage at +300% multiplier for 12.8m points.
Maxie + Vlada full team did 6.8m damage at +175% multiplier for 18.7m points.

Ember stocks slowly climbing back up as the boss gets faster with each kill. On the other hand MaxieVlada will get harder and less stable as the boss gets faster. Ember is extremely stable, because Epsilon is a lazy piece of shit who does fuck all damage but at least does enough to quickly activate Revenge.