Two Worlds Pacifist Run - Four Stones Village

Following the main road south of Thabarkin all the way to the more open country near Cathalon, you'll find the picturesque village of Four Stones in a walled enclosure surrounded by four strange megalithic elven runestones.
There is at least one rewarding set of nonviolent quests you can get inside the village, plus several "special" cases:

The Mage House
Two mages can be found inside a large house in the village, both offering quests that can be completed without violence.
Annon Moha: "I Am the Real One"
You'll meet a wizard named Annon Moha inside, who will be vexed (and repeating the word "Fiddlesticks!") since his apprentice is refusing to aid him in his work. The reason: Moha apparently attempted to create a double of himself by performing a rite involving a Magic Mirror, but the double rebelled on him and has now set itself up in Windbreak village claiming that he is the original.
One of the two Annon Mohas...
Moha wants to destroy the double, but can't do so without the aid of the Magic Mirror, which his apprentice refuses to give back to him for an understandable reason: The Annon Moha living in the house next ot the Windbreak Village teleport claims that he is the original, that the Annon Moha in Four Stones is the double, and both are trying to obtain the Magical Mirror in order to destroy the other one.
The nervous Apprentice is named Esperon Hiatos, and you'll find him a short distance a way in the village commons during the day. Hiatos is highly agitated, but believes that a high-ranking Society wizard named Lokar Maois may know a way to tell the dopplegangers apart. He will give you a quest to go find the archmage in Cathalon, but we'll give you the details here, since all you have to do in Cathalon is visit the central mage square to talk with him before returning to Four Stones:
When you talk to Lokar Maios, he'll reveal that he was partially involved in the "experiment," but that he doesn't know any way to tell the two Annon Mohas apart. However, Maios argues that the current situation is actually the best, since both villages now have an equally gifted senior mage at their disposal, despite the bitter complaints of the two Annon Mohas. Lokar Maios will consequently request that you bring him back the magical mirror instead of giving it to either Annon Moha, so that the archmage can dispose of the mirror and prevent either of the dopplegangers from destroying the other.
This is the life-maximizing option we chose, but in order to do that, it's not possible to be completely straightforward with the nervous apprentice Esperon Hiatos: We returned to him, and when he asked if Lokar Maios knew how to tell him apart, we lied by choosing a dialogue option in which the protagonist claims Maios told him how to find a distinguishing mark. Once you give the mirror to Lokar Maios, both Annon Mohas will be safe from destruction.
The nervous apprentice, Esperon Hiatos
You'll never find out which one of the them was the "original" and which was the double, but when you give Lokar Maios the magical mirror, he'll be pleased with you for preserving the two mages, and reward you with some gold, experience points, and increased reputation with the Society of Mages.

Juna Evrist: "Black Shadow" 
You'll meet Juna Evrist, a Society mage who is understandably very concerned with the rise in necromantic energy and proliferation of dabblers in necromancy. (Note: If you come here very early, you may need to have higher reputation with the Society of Mages before she'll give you the quest, but that's easy to do in Thalmont in places like Thabarkin where you can help Rama Erendar recover his staff, or give Daron Moreti a dragon scale, as well as Lokar Maois described above.)
Juna Evrist says that one of the abandoned Elven towers called Earth Claw Tower (which you can see looming up over the northwestern horizons from the village) is now haunted by necromancers and the undead they've summoned. She consequently wants you to "cleanse" the area of the necromancers and their taint. 
Juna Evrist
We ignored this quest on an earlier pacifist run, since we assumed completing it would require slaughtering all the necrolytes, but it turned out that there was a twist: 
This is one of the quests that Two Worlds gives you where the quest will be marked down as solved the moment you enter the area, without actually having to kill any of the swarm of necromancers perambulating around the base of the tower.
We figured this out by sneaking into the tower walls near the end of the game while working on a different quest, and were surprised to receive 2 skill points followed by a quest completion notification and fanfare, even though no necromancers had even seen us yet, and we'd never attacked anything. After we finished our unrelated business at the tower, we returned to Juna Evrist and were rewarded with gold, experience points, and increased reputation with the Society of Mages...
Riding toward the dark spire of the ancient elven tower, now infested with necromancers...
Of course, whether this is an ethical solution or not depends on how immersive you like to be in your CRPG'ing: A pen-and-paper "dungeon master" probably wouldn't let players get away with this, and would probably contrive some fiendish necromantic attack on the Four Stones villagers, followed by wrathful reprisals from the Mage Society, who had been falsely led to believe the necromancers had been eradicated... However, knowing this wasn't a risk in the single player CRPG campaign, we decided it wouldn't hurt to cash in on the xp and gold without fighting, since the AI-controlled necrolytes won't actually ever leave their stomping grounds at the tower to harm the innocent.

Mostrol Mirra: "The Healer's Gathering"
Unfortunately this quest isn't as pleasant and nonviolent as it at first seems to be from the title and basic premise: 
It begins when you enter the house of Mostrol Moria, who says he has an urgent need to gather together his associates, the healers Denor Pater, Grah Magna, and Famah Tolem.
You'll find both Grah Magna and Famah Tolem in Clovelly Village by the sea, and you'll find Denor Pater in Windbreak Village. The good news: Just speaking to them and sending them back to meet with Mostrol Mirra will reward you with experience points.
The bad news: Mostrol Mirra turns out not to be Mirra at all, but an impostor who has hatched a revenge plot to kill the healers, who he claims callously refused to heal his daughter, causing her to die in agony in his arms.
It's a grim story, but one which you can at least remedy to some extent by casting the level 15 Air Spell "Ressurection" on the both of the healers that Mirra already murdered to avenge his daughter. (Mirra and the resurrected healers won't attack each other at that point, but of course if Mirra and/or the surviving healer who are still having a standoff end up attacking each other, you can always cast resurrection on anyone else who dies too.)
There's also several more encounters at Four Stones Village that soft-hearted pacifist challengers may want to avoid:
If you approach Four Stones from the roadside, don't talk to a girl named Laza Larat, because trying to do a good deed by giving her some gold to buy medicine for her mother will surprisingly end up resulting in her being killed by some wolves after she tries to go gather herbs to repay you. (If there's some nicer way to avert this disaster, feel free to let us know.)
On a similar note: 
If you've already been to Quidnar and talked to a Giriza thief named Sling, he'll try to get you to kill a man named Scar who will also be found here, but you'll never be forced to do Scar an injury unless you go out of you way to talk to him and declare that you've come to slay him. (This is an exmaple of why we recommended that you help out Stork and Keshi Lono at the Thabarkin Crossroads Inn to raise your reputation with the Giriza non-violently, because those two were among the few Giriza members with goals that didn't involve bumping someone off.)
Bidding farewell to the village of Four Stones...
Having concluded our quests of choice in the Four Stones environs, the time came to ride south through the hills to seek out more pacifist challenge quests in another small village called "Windbreak Village..."