Welcome!
There's a very detailed walkthrough
here at GameFaqs
Hope that helps!
EDIT: Er, ho hum, not much help that was. Straight from the horse's mouth, Mr Dan "Walkthrough" Simpson himself -
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Viconia Romance Note:
I don't normally take asides for romances, but this one is fairly
major. You can help change Viconia's Alignment here. After
Melissan leaves, Viconia will comment on the carnage of the battle.
If you agree with her that this is quite impressive, she becomes LESS
likely to change alignment.
Tell her that this is horrible.
Then, to get her to switch, say one of these lines:
"Power doesn't automatically equal death and destruction, Viconia.
This isn't me." OR
"Has killing *ever* pleased me? What are you thinking?!" OR
"All this killing is wrong, Viconia. And the fact it's happening
because of me is worse!"