I think we spent almost as much time planning between and during Acts as we did actually progressing the RP.
Which reminds me, I realized quite some time after the RP that, despite all the time I spent thinking about how the story would go, Nifty and I separately came up with the same plot device and created a small plot hole when Sonya was returned to Thunderclawnia. See, Nifty came to me to suggest a system of gods and stuffs and a little bit of lore, which was relevant to her character. The universe was created by gods called "Creators" and these gods were eventually overthrown and by some of their power hungry creations. I liked it and rolled with it and came up with a plot device of "Creator Essences". Basically, in the universe there were fragments or essences of Creators trapped inside normal objects (The Overlord's armor was actually a vessel for a very important Creator Essence) and unbeknownst to me, Nifty's character had one. I'm very confident that the sword she used was a Creator Essence, though she may have called it something else. The thing is, The Overlord is not actually a demon, he's something much more ancient that knows a lot about Creator Essences. The amulet being retrieved from the Ogden Temple in the first act, by The Overlord's request, was a Creator Essence. The thing Lathas was doing off in Sydun was to retrieve a Creator Essence. So if Nifty's sword was a Creator Essence, The Overlord should have instantly known and kept it for himself, but Sonya was returned with her sword and the rest of her belongings.