Voracidous is a nightmare of a fight, And requires a very specific set of gear to defeat.
The Trespasser sniper has a great special effect where as it totally ignores an enemy's shields and directly damages their health, This is great on the chief as he has very low health as opposed to his huge shield capacity.
Pouring points into "immolate" with the Siren by using the right Banshee class mod means that when you are in fight for your life you can deal an insane amount of fire damage.
Also using a 28-30% fire damage relic adds even more to your overall damage output.
Couple this with the fire Norfleet and you can deal MASSIVE damage to an enemy when you are down.
I hope you enjoyed the video and again I give a massive shoutout and props to grimw2 for discovering this great technique!