I have asked this question many times and it has been explained just was well. To my knowledge, leveling up into a god only applies to AmartÃa since he has a godly soul, and even that is a stretch. The rest of you halfings must squirm.
I'm pretty sure it's mentioned somewhere in the OP that the demigod requires divine essence from a god, not only levels. Amartia being the exception due to a pre-existing divine essence.
@Kho, am I dead?
I don't know, but we can check for you.
Kho: Hey mate, come here for a second
Thulemiz: What d'you want, inferior creature?
Kho: Can you check if this guy is dead?
Thulemiz: ...do I have to?
Kho: It would help...
Thulemiz: I think it's a bad idea...
Kho: Why?
Thulemiz: You don't want to know
Kho: So is he dead?
Thulemiz: If he is, there's no way I'm raising him
Kho: Why?
Thulemiz: You really, really, don't want to know
We can confirm from the above exchange that Act, you might actually be dead (though I hope you're not, because that would just be weird mate, go get yourself check out). Not only might you be dead, our local Necromancer is against bringing you back :(