Cyberdimension Neptunia: 4 Goddesses Online - Part 011 - Magma Diver
1The part is solely side quests, and I don't think they're necessary at this point for the main story, given they don't occur in the objective area.
Firstly with the Goddesses in Fiyar Mines, although I speed up the boss kill by swapping parties (the Goddesses finish it off for XP though).
Next up back to Arodie Cavern, and knowing that regular enemies tend to only get buffed as a result of story events, I just head straight for the boss, which I plough through with the big sisters.
And Noire seems to get stuck on a rock.
Finally off to Hestie Crater with the younger sisters. Like most scenes, I don't think you need to be active with the party in the scene, but nevertheless the Hot Springs CG unlocks here.
The Mirage El is a new boss, and can hit quite hard, but a fast ranged character can deal with it with little, to no consequence (which is easy given the size of the arena). This is a good shout for either Uni or Nepgear (the latter I'll use a bit later in the game at points).
I'm not sure if I played around with AI much before this (probably for the flying enemies), but I found from this point on changing the AI behaviour in the boss fights is helpful to avoid white outs, and to know when to attack.