[Autumn]

Despite reading out as your weapon dealing the damage, earthbound vengeance cannot be used to trigger Hidden Cut from, I wouldn't be surprised if this is not a bug personally but I figure I would report it anyway given Hidden Cut tends to follow this logic.

[Neus]

Hidden Cut only applies if the damage instance would trigger 'on attacked' effects. Field, status, and (I'm pretty certain) bonus damage doesn't do this.