The Unfaithful achievement is gained by destroying The Emperor with Darth Maul. It can be achieved by dueling it out in "Two Player Arcade" mode.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.