The people who initially wanted to retreat suddenly had their eyes lit up. Indeed, the rules and willpower gained by killing the opponent now are incomparable to what was gained before.
Rule Fragments are the key to comprehending one's own Laws, while world willpower is crucial for condensing the Divine Fire of the God Soul. Naturally, the more, the better. The more thoroughly prepared one is, the firmer their foundation will be after becoming a Demigod, and the stronger they will grow.
Especially for Gollum, at first, one-tenth of the harvest was not enough. But now, even killing the opponent here, one-tenth would be more than the original harvest, enough for him to become a Demigod.
So, although reason told them staying would be extremely dangerous, none of them retreated.
