Bug Report ID: #1224788809 Zalmarath the Colossus fight needs serious attention

This fight is absurd as melee. Boss hitbox for his knife attacks is inconsistent and will one-shot characters at wide ranges without warning. Hits on boss are inconsistent. Rolls will send you through floor, up boss arms, etc leading you to lose sight of character in unintended ways causing death. Unable to roll past adds and being body blocked leading to death. Difficulty spike creates an unfun obstacle for players trying to overcome poor state of encounter. Repeated efforts are unnecessarily frustrating due to high health pool of boss and consistent one-shot mechanics at such a low level. I have tried this boss dozens of times without success and will be shelving character until fixes are made.