I did DPS because Cookiez didn't have Black Spindle at the time and the spindle was absolutely necessary for max DPS in this case since we were only using a single orb at a time to attack Golgoroth. I still believe that a Triple Tap or Surplus 1000 Yard Stare would be better if you're doing more than one orb in your team's strategy (I had to equip a rocket launcher for surplus in this video).
At the end, we show how I got sniper ammo boots, which allowed 2 extra sniper shots per phase and helped tremendously... Pretty darn lucky for someone who doesn't main a Titan when none of the vendors will sell those darn boots.
Feel free to leave questions or anything in the comments!