Beyond Divinity (2004)

You were a disciple of the Divine, a servant of light on a never-ending crusade to fight evil. But fate has made a terrible turn on you. During an epic battle with a powerful necromancer, dreadful daemon named Samuel tricked you and dragged you to his dimension. There you were trapped and tortured. But like every typical daemon lord, he had a very twisted, sadistic sense of humour, so he decided to chain your soul to that of a Deathknight. Thus he cursed you to spend the rest of eternity bound to a creature you were fighting all you life. Now you must work together to escape your prison and find a way to break this curse!