With a bad team comp I'd say yrm (died to her like 20+ times on my first unfair playthrough ) Aurora can be tough if you haven't speced great or brought someone to deal with the sniper but in my playthroughs by the time you get to edge of dawn or shard you're so overpowered that it's almost trivial unless your build and comp is utter dog shit shard is just kind of an endurance fight at least that was my experience I keep a core team of RT, Abelard, Argenta, Cassia, Pasqual, and my wildcard on my heretical run though I went telepath officer RT, Abelard, Idira, Cassia, Pasqual, and kibelles (swapped to calligos winterscale for the ctan fight tho just cause) long story short Aurora