Lvl32 in all orange/purple fresh 30-32 suit. It seems like quest designed for ranged sorcerer - assassin is getting massive AoE along with Khem and dieing almost at the same time.
Really - this game design is beyond comprehension and nowhere near "enjoyable" term (except for huttball). Already dropped multiple quests because they aren't actually solo-able despite missing marks "heroic 2+", "bring a friend", "get +5 levels in PvP and return", etc.
You need to re-evaluate how you play, I was 31 and did it the first time, with an alive Khem Val, and 1/2 health.
Don't blame the game, your doing something wrong... call a spade a spade. If others can, you can