The level 3 shields, Archangel Shield, Archdemon Shield, Sodom Shield, Tartarus Shield, Cocytus Shield, and Gehenna Shield.
If they follow the pattern of their level 2 and level 1 incarnations, they should allow you to block Slash, Pierce, and Strike,
is this a translation error or are they not supposed to block those?
The pattern for Archangel shield should be, it cannot block the opposing element(Dark), has Star vs the element it is in(Light), and
can block everything else at penalty, in this case Triangle. The level 1 and 2 versions have solid Triangles, while the level 3 versions seem
to have a hollow Triangle.
With the exception of Mystic, since they have no real opposing element, Mystic versions cannot block Slash, Pierce, and Strike.