In a real RPG like Oblivion, there are many more meaningful quests to do after the main quest. In Fable2, I already got all the gargoyles, whats the point of assassination missions when there is nothing to make money for? I already bought all the houses, but again what is the point when there is nothing to make money for? I finished the demon doors within a half hour of finishing the game, I finished the side quests within a week, found all the keys. Oblivion I have played for 150+ hrs and I still can find stuff to do. To get almost all achievements in an "RPG" like Fable 2 supposedly is in a week, to me, is much to short. Worth a rental, but easily finish everything in a week.