I've already written quite the in-depth guide on the how to here.
https://www.reddit.com/r/3dshacks/comments/473ttj/guide_fe_fates_unlock_anna_and_other_dlc/
Does /r/titlegore count?
https://www.reddit.com/r/3dshacks/comments/473ttj/guide_fe_fates_unlock_anna_and_other_dlc/
Does /r/titlegore count?