Load up Omnigul but not go the Strike playlist. You can select a 320 version by going to Earth to select it. Bring 3 Hunters with Nightstalker tether and maybe Gunslinger Celestial Nighthawk. Bring Razelighter or at least Gjallarhorn or Sleeper Simulant. Kill her before she gets away to the final room and then let the adds kill your team. Bring plenty of materials to upgrade your exotic Heavy weapon and equip whatever blues drop to increase your light level. You can easily get above 360 in an hour or so if you have a competent team.