Help with converting King’s Fall to Dungeons and Dragons?

Any Destiny players who are also D&D players, I need your help.

I’m running a one-shot for my company and I’ve designed a dungeon that is the tomb of a mummy lord. My coworkers are huge Destiny fans and I want to pay homage to that and make something easy to digest and recognizable for them. The whole dungeon’s puzzles have been lifted from King’s Fall, and the mummy lord is pretty squarely Oryx.

I want to design a combat encounter to mimic Golgoroth, replacing him with a death tyrant. How can I recreate the fight (specifically the“Golgoroth’s Gaze” mechanic is giving me a headache) in a fun way?