Is completing the campaign on one character all that’s necessary or do you need to complete it on every single character? Also, if I’ve already completed the full campaign on retail is it beneficial to do it again?
You get Infinite Knowledge from completing Achievements like clearing zones and the campaign.
I’m sorry, I should have added more information in the original post. I have completed all appropriate questlines for infinite knowledge and achievements within legion remix.
I’m trying to ascertain whether things like the Illidan storyline have any benefits for someone already maxed out on gear.