Thread:HunterXX3/@comment-4802891-20160930101446/@comment-4802891-20161002095533

Hassan is an endurance round with debuffs (that are quite unconsequential I found, except for the def down because it can screw you over) and Sieg is a battle that throws away any regular approaches you would go for against an all-Saber team...

Depending on what you have, apparently Sieg can be taken down with Buster chains (kill the 2 dragons first) or a DoT strategy (don't kill the dragons, because apparently he debuffs himself when he is alone). I went for the former as I have no reliable debuffers, or rather the one I might have are underleveled and I don't know how to use them efficiently at the moment.