Destiny 2 Lightfall: How to Complete the Unfinished Business Exotic Quest

Unfinished Business is a post-campaign quest in Destiny 2: Lightfall that sees you getting your hands on one of the expansion's flagship Exotics. Called the Deterministic Chaos, this Exotic LMG shoots to its own beat, weakens on the fourth hit, and causes a Volatile explosion on the 16th. The quest is on the longer side and will ask a lot of you, but the weapon is well worth it. Here are all the steps to complete Unfinished Business.

How to Complete the Unfinished Business Exotic Quest in Destiny 2 Lightfall

You can start the Unfinished Business Exotic Quest soon after finishing the Lightfall campaign on either difficulty. The first step unlocks following the ending cutscene.

Unfinished Business Step 1

Visit the Hall of Heroes. The door at the back of the far room will have a quest marker. Approach the door and interact for another cutscene with Nimbus.

Unfinished Business Step 2

Meet with Nimbus. He'll be back at the ledge in Strider's Gate.

Unfinished Business Step 3

Here's where things get interesting. This part has two tasks.

Collect Cipher Qubits from Vex. Defeat Vex anywhere on Neomuna, and they will drop materials you need to pick up in the world.

Screenshot by GameSkinny

Extract Rohan's Data from Cloud Accretions. Cloud Accretions are the planetary material for Neomuna.

Screenshot by GameSkinny

You'll find it in all zones, it's a tiny crystalline grass-like structure, and we have a guide about it here. The more Cipher Qubits you have, the more often you can extract data.

You can see how many times you can extract in the third row of the step screen. Every 1x you have is a single extraction.

Unfinished Business Step 4

Screenshot by GameSkinny

Located the final Data Packet at Maya's Retreat. You'll be headed east of Límíng Harbor through the cave system at the area's far end. You went to Maya's Retreat during the campaign: it's the sizeable open arena where you fought a Tormentor.

Unfinished Business Step 5

Extract the final Data Packet at Maya's Retreat. Clear all the Vex that appear there and claim the data from the Vex Conflux.

Unfinished Business Step 6

Regroup with Nimbus and Osiris at the Radiosonde. Also near the Límíng Harbor, follow the markers into the building complex, past the breakable doors and several waves of Vex. You'll eventually need to start clearing rooms of Vex for a few unbreakable doors to open.

Unfinished Business Step 7

Retrieve a Vex Compass from the Thrilladrome Lost Sector in Límíng Harbor. Finish the entire Lost Sector and open the final chest for the Compass.

Unfinished Business Step 8

Create Chaos in Ahimsa Park. Defeat Shadow Legion Cabal in Ahimsa Park, and you'll get you'll make extra progress by defeating them with Abilities: grenades, charged melees, and Supers.

Unfinished Business Step 9

From Ahimsa Park, take the path into Calus' Typhon Imperator ship. Make your way through until you reach a yellow glowing portal, then go through it. You'll end up in the room where you had to flee early in the campaign.

Screenshot by GameSkinny

You need to clear all the enemies on the main floor to drop the shields at either side of the chamber. Collect the energy from both sides once the shields are down, and you'll receive the Seed of Silver Wings.

Unfinished Business Step 10

Return to Nimbus in Striders' Gate to build the passkey. Exactly as it says. Fast travel back to the ledge and speak to Nimbus there.

Unfinished Business Step 11

Complete the "What Remains" Mission

The flag that launches the mission is on the way to Maya's Retreat. Once you're in the mission, you'll be in the Black Garden, following the path you take through the Garden of Salvation Raid in reverse.

Your first stopping point is a large chamber with a radiolaria river in the middle.

Screenshot by GameSkinny

You'll need to destroy the conflux cubes marked on your HUD, as they control the large shield blocking your path. The one to the right of the entrance is blocked by an aerial shield of its own, though this one is much smaller. Note what these look like, as you'll be seeing them again.

Destroy one final cube below the ledge, also blocked by a shield. There is, however, a mirror-like structure next to it that you can use to ricochet your bullets onto the cube.

With the large shield down, jump on the moving platforms and follow the column to your left around. Go past the Cyclops until you reach a set of long hallways blocked by red energy barriers. Clear the Vex, and the Minotaur that appears will drop a Vex Cranium from, which you can reflect off the mirror to destroy the cube generating the barrier.

Jump across the moving platforms to the central area, clear the enemies, and head down the other open hallway. There will be a yellow-bar Wyvern there. Destroy it and its guards to progress.

Go beneath the tree roots and into the large blue-lit chamber. There are three Taken blights to destroy, with Taken Ogres guarding them. The Ogre eye blasts can blast you off into the air, so watch out for that.

With all the Blights gone, take the Vex portal and follow the marker. You'll reach a very long, flower-covered platform; at its end will be Nimbus and the Deterministic Chaos on the ground before him.

Screenshot by GameSkinny

Pick it up and follow the pools of Vex energy (which will also give you full ammo as long as you stand in them).

Blend your way through every enemy in your path, taking out mirror puzzles as you go. Eventually, you'll reach a large arena where Ghost will chide the Vex for creating a false god. Defeat all the enemies, the focus on the Conceptual Mind. It will flee down the hallway across from the large circular structure and radiolaria sea. Break the Vex cubes as before, dropping both the large shield and making the Mind vulnerable.

For the Mind's last stand, it will teleport to the back of the long hallway, and you'll need to break two final cubes, then burn the Vex into the ground. When you see the Mission End message on the left side of your screen, you can return to Neomuna.

Unfinished Business Step 12

Bring the Conceptual Mind's memory core to Nimbus in Striders' Gate. Back to Neptune to meet Nimbus.

Unfinished Business Step 13

Head to the Hall of Heroes to pay respects to those who came before. A quest marker will be near Rohan's server memorial. Interact with it for a short cutscene, and you'll have completed Unfinished Business.

Screenshot by GameSkinny

After you complete Unfinished Business and the Deterministic Chaos in your hands, all that's left now is to use as you please, as there's currently no Catalyst available. The weapon hardly needs it, so test it with your favorite Void 3.0 build and see how things go. For more coverage of Exotic quests, check out our guides to the Gjallarhorn and Dead Messenger, to name just two. Our Destiny 2 guides hub has more.

Featured image via Bungie