I picked up this quest from the temporary vendor (Barro maybe) and have gotten all the way to the last stage, where I have to fight the Tomb Protector/Effigies. I can't get through the armor. I have equipped Corrosive and Heat mods and don't seem to be putting a dent in them. I have used Xcal's Exalted Blade attack with little effect. My next move is going to be trying Ember, but I'm afraid that I'm going to run into an issue no matter what I do because there is no way to re-supply myself with energy during the fight. I have gone after this with Wukong several times and Xcal a couple of times. I don't have many other frames, and only 4 at 30. Xcal, Loki, Wukong, and Ember. MR7