Head down to the coast on your Sparrow and head into the hole again like in the original mission to find the Ishtar Academy. Fallen and Vex are battling out here; the Fallen just don’t get along with anyone it seems. As usual in this situation, allow the sides to whittle each other down a bit then finish them both off for the most experience. Exit at the back of the room to reach the Ishtar Commons where you’ll find Vex and Fallen battling here as well. Head off to the left and go through the door to reach the Hall of Whispers.
Hall of Whispers - Darkness Zone
You need to defeat the Fallen in this location. There is a Major Servitor named Simiks-3 that you’ll want to hit hard and fast since it will regen the health of the Dregs and Vandals that are also trying to kill you. In addition to all this you still have to contend with the Major Vandals ahead so use the rooms to the side as cover so you can recover your health and reload. At the back room you will deploy your Ghost to gain access to the Archive.
Take the steps to the bottom of this vault and deploy your Ghost at the main computer on the left side to gain some more information. You can pick off a lot of the Fallen before they start to move up and take cover. It’s not a bad idea but there will be a Servitor that enters so focus on it instead. Your objective shifts to fixing the Conduits now. It’s not difficult to reach the main Conduit but just be wary of Stealth Vandals and the Servitor. Have your Ghost repair the Conduit then repeat this process for the other one; you will face the same tribulations.
If you are with a team you’ll be in luck here because you get hit from all angles. A Major Captain and Major Vandals appear in addition to the Stealth Vandals that continually sneak up on you. If you are alone you’ll need to focus on the little guys and hit the big guys with Heavy Weapons and Super Abilities to avoid taking too much damage. Complete the extraction with your Ghost and head back to the Tower where the Cryptarch has a reward.