Editing Mission 78: Vanquish the Heartless threat

|restrict=Level capped at 20<br>Take 30% more damage

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This one will require a lot more patience as it is more difficult than the last mission as your level is capped at 20 and may take a couple of tries. [[Auto-Life]] at LV3 is a key element here. Stock up on [[Fire]] Magic at LV5 along with [[Elixir]]s or [[Cura]]. Use a Keyblade key that is good in physical attack, but without any extra combo attacks such as [[Zero Gear]]. Raising your critical attack will also contribute greatly for this mission. Just like the mission above avoid the Ruler's attack as the damage is worse in this mission and heal only when it is safe to do so. Also keep an eye on the map to avoid an out-of-bounds area or making sure the Ruler does not enter it. During the first part use regular attacks or Fire to deal with Ruler's tail. When it glows from entering its berserk mode do not come into contact with it to avoid heavy damage. Fly low while it charges and do not come into contact with the Ice orbs as it knocks Roxas upward, putting him more at risk for heavy damage. During the second phase when the Ruler uses its coin shot, after it stops use Fire to hit its core before dodging its coins again. If you are in a spot where the coins can't hit you then keep using Fire. Once its core is fully exposed move in and directly attack it to inflict heavy damage but pull back out of its range before it uses its claw attack and repeat this process until it is defeated. Hopefully this will allow you to defeat the Ruler and still get all 3 Challenge Sigils.