Update v20190617:
Fixed a bug that made enemy attacks deal the same amount of damage regardless of the player's chosen difficulty level.
The game balance is now back to its intended values and is identical to the Switch version in that regard. From a gameplay standpoint, enemies now deal less damage on Squire and more damage on Legend. Knight remains unchanged.

If you want to change the gameplay difficulty you free to do so at any time from the settings menu.

Update v20190611:
Fixed a crash bug when attempting to view details about a consumable in battle.
The "Bound and Determined" achievement should now be possible to attain. If you've already met the requirements, simply loading your save should grant you the achievement.