So Basically this thing is not even in Continuity with Revenge of the Sith and Completely ruins the original trilogy.
Much like the Clone Wars movie shows Anakin having a pawaan when he never was intended to have one, until Lucas changed his mind when Revenge of the Sith was several years behind him.
Okay on to the Force Unleashed Bashing. Vader and Palpatine Create the Rebellion to ensnare Bail Organa and Mon Mothma. LOL. Just like Sidious created the fake seperatist movement.
Okay Padme created the Rebellion in the deleted scenes of Revenge of the Sith.
And the secret apprentice never was secret it was palps idea to use him to ensnare the rebels.
Vader says something to him like i intend to throw down the emperor with my apprentice but he is not you. Which Implies that at this point he knew he had a son, and this is two years before the battle of yavin. SO did he know Luke was on Tatooine?