Howdy, I know it takes a phenomenal level of virginity to complain about the lore, but Menaphos was released as a set of 5th Age quests detailing the remaining 2 aspects of Tumeken that hadn't yet appeared. Both of these aspects were rescued during the questline meaning that currently all 4 are accounted for and ready to fight Amascut.

The questline ends with Amascut the Kharid-ib at the Soul Altar with Tumeken asking his daughter to stop what she's doing. This is a pretty important scene because it confirms that Tumeken is in a similar form to pre-FotG Zaros, rather than comatose (Tumeken self-destructed to end the a war between himself and Zaros).

The continuation of this plotline is then in a somewhat weird position, as it has to continue following Sliske's Engame as neither Tumeken nor Elidinis had a part in the competition for the Stone of Jas and so are not referenced in dialogue, even by Icthlarin, their son. This is also further made strange as Amascut, a famously power hungry deity also had no part in the race of the Stone of Jas, and so the questline seems very confused as to which side of this conflict it will eventually end on.

Rant over, just hoped for this questline to be resolved or even followed up on after Menaphos' release.