For Vorgath, Save your exotic for your heavy I’d say. If the machine gun nerf is as bad as it sounds, sleeper is the go to. Wardiff would also do a job. A void fusion or bow or even pulse for your secondary (I went with emperors envy myself). For Dul, risk runner did the job. It’s easy Prob arc conductor in that room, so you’re set. Ads aren’t an issue and The chain damage can keep the knights at around the same health until you’re ready to finish them off. Paired with a machine gun like hammer head or avalanche or 21% (my choice) for boss damage. Rally barricade or rift with lunafaction boots so you’re not reloading your heavy during boss damage is also a great idea.