How do you choose to be bad in Fable 2?

Answer 1

YOU DO SHADOW OF TEMPALE MISSION AND KILL PEOPLE

When you choose side missions and jobs choose those that help the wrong sort of people, even through inaction you can be somewhat bad. The side missions that help the bandits, like the bandit mission where you help them take over Brightwood. Performing sacrifices at the Temple of Shadows, instead of defending the Temple of Light would help become bad. If you choose not to do either in that last instance it will still effect you negatively because the Temple of Light would still become corrupted by the Temple of Shadows. In the job category if you do the Civilian Displacement missions instead of the Bounty Hunter missions.

Another really good way to become bad is by buying a lot of businesses and raising the prices up as high as they will go, the same will work for any houses that you buy and rent out.

I am fairly certain that if you get married and cheat on your spouse or do something to make your spouse leave you, then you will also get negative points.