Can On Raid On Ground. Over a dozen file for county offices. Then, you will have to defeat all of the level 1 and level 2 raid bosses.
A way to funnel or guide the raid mobs into the killing area. They said they chose a ground raid in order to avoid innocent deaths, despite the increased risk to the forces. To unlock the calventus raid, you will first have to unlock the guardian raids by just progressing through the main story, then finish the main story in the yorn continent to get the appropriate gear.