OR-EX-8(復刻)強襲 星5オンリー 【アークナイツ】

This guide explains how to defeat the boss using the combination of Cologne and Gracebearer. Ashrock can be used as a substitute for the artillery. However, timing the skill usage might be difficult. If Kazemaru is specialized, his skill becomes available immediately after 4 attacks, so use it as quickly as possible. If you're late, he'll be shot down and turn into a clone. If you're worried, you might want to place a healing drone.