Finally got it, I choked one a year ago and stopped playing rsg but I got back and played a bit a couple of days, I literally did it on my first enter today. The bastion was super scuffed and I paused a lot cuz I was nervous and obviously super lucky run with sub 3 enter on insane blacksmith and kinda fastion also 400 block blind. End fight was unlucky could have been sub 13 if insta perch.