Posts from Thoughts on the scenario after completing "Hammers of Fate". Auto-translated

What do you think happened to the souls of Alaric and Laslo after they were killed? Surely, after everything they did, they couldn't just return to Elrath... Is there any mention of what happened to them after death?

In Ashan, those who serve demons usually become incubi after death.

I didn't know. But didn't they sometimes kill demons too, or doesn't that count?

He didn't just say those words and walk away; he was hysterically laughing while doing so. The guy clearly lost it.

I have another question: remember the cutscene from the Lords in the final mission for the Orcs, where Alaric talks to Biara in the guise of Isabel, and during the conversation, Biara loses her form and transforms into herself (a succubus). After that, Alaric runs away and says something like, "How could I? I served a succubus, I betrayed Erathia," etc. And yet, after that, as if nothing had happened, he leads his army to attack Gotay. How can this be explained? Was his brainwashed so much? (Sorry if the question is not entirely relevant to the section).

They won't accept him back into their ranks anyway, what else does he have left?

That's because Tieru told Agrail (presumably, Faedaen as well) that the heart isn't really that useful. So what if it teleports bad guys to Shio? They'll just show up again.
And Railag openly tells everyone who, when, and in what quantities he killed. Apparently, the elf didn't know about his past until their meeting with the Overlord, but then... As they say, it's no use crying over spilled milk.

and what about Railag? He found out that A grail is Faidaen before the ritual of cleansing Isabel (the scene where Railag confesses his love). There was enough time for revenge...