User blog comment:Diyartifact/Shepard's adversaries/@comment-4980393-20120408083330/@comment-1388547-20120408230030

Indeed. Charge, shotgun, and he was immediately in his invincible shield-recovery mode. Very annoying -- if he hadn't had backup, he wouldn't have lasted much longer than a normal mook. Of course, this was on Normal; I don't know what he's like on Insanity.