The ruthless route really changes the perspective on Nikos. He is a good boy.
Supposedly there are only 7 beasts, and each god only donated but a single drop of ichor. It doesn't say that every god donated, so it could either be 13 from the olympus 12 + hades, or just 7 that voted in favor of the labyrinth. unless there could be more "gods" involved.
What i do wonder though is that there is ichor elsewhere within the hotel. at least, i thought that's what it was anyway. there was this liquid dripping from an axe head that is related to asterion's execution, and the crystal wall in the hermes altar.
Anyway, it was a short update introducing this quest, so obviously they couldn't put all of the cards on the table right away. There is not much to do for now except be wary of what might be at stake on this request and we don't know.