"Mass Effect 2" lead writer Mac Walters reveals an essential moment in the life of Commander Shepard, the galaxy's greatest hero, only in "Mass Effect: Redemption"! The eagerly anticipated sequel to the blockbuster science-fiction epic IGN.com named the number 1 Xbox 360 game of all time, "Mass Effect 2" begins with the disappearance of Commander Shepard. The story of what happ...