Originally Posted by Fiona
Soldin will spawn even without Eir, now. However, you could always just restart right after you kill Rigel and not bother killing Soldin even after he spawned. As far as I know, the quest requirement is only to kill Rigel, not to get a "stage complete" from 6-10H.
Eh, is the bold part true? I've had parties that cleared History within 6 minutes + 2 secrets, and we still didn't get Soldin to show.
There was a screenshot of it before, but I'm very skeptical. Since I've never tried with 3 personally, and there could've been an Eir's presence in the stage before.