Akhôrahil

This seems preferable, agree.

My PCs tried to set up a complicated plan using Darkwalk, until I told them they wouldn’t be able to see or hear each other.

Prax is where your heart is?

However, it's interesting to ask who the Waha that Pavis defeated and then healed was. Even if you just say "an avatar of Waha, not the big kahuna himself", this means that a god can act within time using such an avatar, and this seems as though it would be important and a Compromise workaround.

1. One of the players made a temporary Voralan PC to use while his main one is off fighting in Hahlgrim's War. It seems INT 22 gives you a lot of solid skill category modifiers... 2. You missed the opportunity of calling this RuneQuest: Mycology.

I keep saying Illumination is Existentialism. There is no objective good or evil, no-one has real authority over you, and you get to create your preferred self without limits. God might not be dead, but if you're Argrath, that can be arranged.

Elementals are often used as temple guardians.

Hell is empty, and all the devils are here?

It's from KoS when Argrath says it to the Devil. It doesn't seem all that supported there either.

Seems unsupported (also, it’s 600, right?) - when in the Second Age would that have happened?

If you have the time and magic resources, you could also map your ancestry by summoning and questioning ancestors, and working your way back that way.

I don't think this matters for heroquests. Vadrus is also annihilated and without a cult, but you can explicitly run into him in heroquests (such as Orlanth Forms the Storm Tribe). He just can't provide magic through worship. Similarly, you will have to defeat Wakboth (using the Net) if you're doing the LBQ - otherwise, how would it even work? I believe that quote is about what you can do from/into the mundane world.

Yes, hence the idea that you can defeat god-like beings in Spirit Combat within a heroquest framework. 1. Yes. Any gods you meet will act according to their behaviour in the myths. Possibly this might not hold true if you meet a heroquester who has taken on the role of the god, but even in this case, acting out of character opens them up for an identity challenge. 2. I say no. The god world and the herorealms have a timeless quality to them, where you can encounter entities before they get destroyed. I don't think the Spirit World shares this quality. Wakboth in a heroworld heroquest, yes; in a spirit world quest, no. 3. This seems perfectly reasonable. Although most spirits act only in accordance to their natures as well.

This is an interesting suggestion, because they can be defeated in physical combat, on HeroQuests. Perhaps it's rather that you need the correct mythical framework (I don't know exactly who the Bad Man is, but shouldn't he be vastly stronger if he's the enemy of someone divine or godlike? this suggests that a mythic frame has been created where a would-be shaman has a chance of fending him off).