Fable was horrible, I got it over X-mas, and beat it in five hours.
The end boss (Jack of all Blades) is a cake walk, all you need is Battle Charge (forget exacxt name, the one that makes you run forward real fast and damage enemies, Assasin Rush, Enflame, and a bow. Use Battle Charge and Enflam when your fighting the little guys he throws out in the beginning, then Battle Charge, Assassin Rush while he's on the ground attacking you with his sword, and when he goes in the middle and floats, use battle charge to dodge his attacks, and your bow to constantly pelt him with arrows.
Only time I got hurt was when he used the skill that you cant block, and took down about 2/3 of my life, with my life being full, and maxxed.
Honestly all you would need for the entire game is Battle Charge and a bow, sadly I didn't find that out till my fight with Jack of all Blades.
And Fable will even lag when there is too many NPC's around you...