I understand the pain of not having Edda (and or Beryl) as most of the guide out there for this trial is using them and having a super easy time clearing this stage.
But don't worry fam! I got ya, this is the improved piercing comp for this weapon trial, what differs in this run is I use outlaw archer instead of outlaw crossbowman but I think both are pretty equal and interchangeable so pick whichever you like.