Act 6.4 100% - # units?

Lollapalooza

Hi MCOC community,

I’m trying to get a rough estimation on how many units are needed to explore 100% Act 6.4 with my roster.
I’ve already 100% explored 6.3 and have done an initial run of Abyss, and am currently working on 6.2 and 6.4 exploration.
Which champs were MVP for Act 6.4 for y’all?
From my roster, Ghost is r5 now and Guilly 2099 r2.

Thanks for your help.

Spaddicted

I would like to know about hard paths in 6.4 too from what I saw 6.4.1 is not difficult but I'm sure next maps aren't easy.

Explored everything else except Abyss.