The left gazer probably has the hardest job, just stay in line of sight with the boss so the orbs come directly to you. Right gazer can run up the hall and most of the orbs will be destroyed by the walls. Once the gazers are comfortable with their roles, the fight is a piece of cake.

I was right gazer and I kept getting overwhelmed because I was told to stay in the corner and shoot the orbs. Which is easier said than done to do consistently.

If you watch the video I'm actually right gazer, so you can see exactly what to do. In this strategy, nobody is firing on golgoroth during the right gaze section, so you can run around as much as you want. The axion orbs will only follow you so far, then they just pop. (You can see exactly how far when I miss judge it, and get wiped, lol)