Taken King: How to Get Sleeper Simulant!The search for Sleeper Simulant starts with “The First Firewall” quest! To unlock it, you’ll need to turn in all four Legendary “DVALIN” Relics (which drop at random) to the Gunsmith. This will be unlocked on the 7th of each month.

Update: Part 2

If you've collected the items needed to unlock it, The First Firewall is in your Director today. If you haven't, it will return in time.

— Bungie (@Bungie) October 7, 2015

The First Firewall

This mission pops up in the Cosmodrome, taking you to Rasputin’s Bunker where Omnigul is first spotted during The Dark Below. Once you scan the console, you’ll need to survive multiple waves of Hive and Taken Knights. Have a weapon with Arc damage ready to go. After the waves, a massive Ultra Knight, Kandorak, will spawn. Take him out quick – he’ll drop the Curious Transceiver.

Decoding the Transceiver

Inspecting the curious transceiver will bring up a screen where you can input a code. There are two rows of images. We’ll refer to the top row as “1” and the bottom row as “2” – each successful code will unlock another.

Input these codes from left to right, in this order:

1 2 1 1 2 2 2 1 2 1 2 1 1 2 2 1 1 1 2 2 2 1 2 2 2 1 1 1 2 1 2 1 2 1 1

Shadow Call

The next mission takes you back up the Devil’s Tower in the Cosmodrome, where Cayde keeps his stash. You’ll start at the broken bridge, and have 4 minutes to ascend to the top. Watch out for Taken along the way, but don’t stop and fight. Use a sword to push through a wall of Thrall if they get in your way.

At the top, you’ll fight off 3 yellow Wizards. If you get down to 30 seconds left, a Shadow of Oryx will spawn. Do it quick! Completion will reward the “Ikelos Fusion Core”, an Exotic mission item.

NOTE: You cannot do this mission with a fireteam! It must be performed solo.

Fusion Core

“Looks like the core’s missing five key components. We’ll have to track them down in order to activate the nodes and restart the core.” -Ghost

There are 5 components to the Ikelos Fusion Core, each with a different challenge needing completion:

Ionized Shell Harmonics

• Complete “The Archive” mission on Venus on any difficulty.

Heavy Power Coupling

• Dismantle any Legendary heavy weapon.

Plasma Confinement Control Module 1

• Defend the Warsat during a public event on Earth.

Plasma Confinement Control Module 2

• Defend the Warsat during a public event on the Moon.

Plasma Confinement Control Module 3

• Defend the Warsat during a public event on Mars.

After these steps are completed, assemble the fusion core and hand it to the Gunsmith. At this point, you’ll need to wait…

Fallen S.A.B.E.R.

Return to the Gunsmith, and he’ll give you a mission for the frame in which you need to do complete the Fallen S.A.B.E.R Strike. Just complete it and return to Banshee-44 when you’re done!