Herrscher of Human vs Elysian Realm 2x difficulty! | Elysian Realm

Today I clear the last stage of Elysian Realm with Herrscher of Human. All I need is her weapon and then i'll have all her gears!! I put the Cerulean Flame on her and her 3 signature Stigmas. I can't clear anything above 2x difficulty, however after I get her weapon i'll try 2.25x.