Board Thread:General Discussion/@comment-24736421-20140403125850/@comment-4536066-20140403161643

Elder gods cannot be killed. source right here.

Being stillborn, though, is different from being killed; it's not being born in the first place.

And yes, it's not impossible that the player will have to somehow face off with an elder god, though in all likelihood if it does happen it will be with only an avatar of that god, will not be alone, and will not result in death.