For completionists, Fable III offers a wide array of achievements and challenges. Achieving 100% completion requires dedication to all aspects of the game.

- All Quests: Complete every main story and side quest.
- All Collectibles: Find all 50 Gnomes, 50 Silver Keys, and 50 Gargoyles.
- All Properties: Purchase every single property in Albion.
- Max Relationships: Marry multiple spouses, have children, and befriend all possible NPCs.
- Max Guild Seals: Unlock every ability on the Road to Rule.
- Weapon Morphing: Fully morph all legendary weapons by completing their unique requirements.
- All Jobs: Master all available jobs (Blacksmith, Lute, Pie Maker).
Many achievements are tied to specific moral choices or actions. If you're aiming for all achievements, you might need to play through the game multiple times or make strategic saves to explore different paths.