Why am I not able to win the Orania Map ?

[Vicious Love]

Arker said:
I have all but one underwater province (Ermor has the one I don't have, and I've avoided attacking them so far as I want to be completely built up and ready, I know they're by far the meanest under AI, especially against R'lyeh since the illithid mind blasts don't affect their troops.)

Erm... that's exactly what makes Ermor utterly useless against R'lyeh. Troops are mindless, so all of your mind blasts will target commanders (as long as they're in range). It's like having an entire regiment of assassins. Bear in mind that Ermor's troops don't rout, they disintegrate.