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| Name | Starting Zone | Level | Rewards |
| Oak's Scorn - I. Cutting The Oak Down | Tarantia Noble District | 53 | |
| Oak's Scorn - II. Tongue Delivery | The Cistern | 53 | 19999 Coins, 19943 |
| Obtaining the Noble Arena Key - I. Find Aquilus | Armsman's Tavern | 45 | |
| Obtaining the Noble Arena Key - II. A Fighting Chance | Armsman's Tavern | 45 | |
| Obtaining the Noble Arena Key - III. A Winner's Reward | Noble Arena | 45 | |
| Octavia's Fate - I. A Suspicious Disappearance | Wild Lands of Zelata | 23 | |
| Octavia's Fate - II. Material Evidence | Wild Lands of Zelata | 24 | 1672 Coins, 4800 |
| Of Rotting Flesh I - Scouting for Padraig | City of Tortage | 13 | |
| Old Man Gormley - I. Old Man Gormley | Conall's Valley | 23 | |
| Old Man Gormley - II. Possessions Lost | Conall's Valley | 23 | |
| Old Man Gormley - III. Gormley's Goods | Conall's Valley | 23 | 1730 Coins, 5200 XP, Gormley's Slicer |
| Old Secrets - I. Forgotten Treasures | Wild Lands of Zelata | 30 | |
| Old Secrets - II. Buying Words | Khemi | 30 | Golem Sting |
| Old Secrets - III. The Magic Wand | Wild Lands of Zelata | 29 | |
| Old Secrets - IV. The Secret Chamber | Wild Lands of Zelata | 29 | |
| Old Secrets - V. A Golden Guardian | Wild Lands of Zelata | 29 | |
| On the Frontline - I. Finding the Woodsman | Eiglophian Mountains | 50 | 13357 Coins, 13903 |
| Order Silks in Poitain - I. Speak to Serathos | Conarch Village | 20 | 7612 Coins, 10200 |
| Orders From Kylikki - I. Discovering the Plans | Field of the Dead | 41 | |
| Orders From Kylikki - II. Seeking Advice | Field of the Dead | 42 | Gaudic Throwing Axe |
| Oris' Overture - I. A Recipe for Success | Wild Lands of Zelata | 20 | |
| Ossian's Odyssey - I. Cimmerian Style | Conall's Valley | 30 | |
| Out of the Frying Pan - I. Standing Tall | Eiglophian Mountains | 56 | 23427 Coins, 22445 |
| Out of the Frying Pan - II. The Pilgrim Survivors | Eiglophian Mountains | 56 | 23427 Coins, 22445 XP, Pilgrim's Hammer, Pilgrim's Mace |
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