Complete the strike "The Devils' Lair" in the Cosmodrome with your [Arc] Arc subclass and new Exotic armor equipped.
Achieve a grade of B or greater on any Solo Ops activity on Advanced or higher difficulty with your [Arc] Arc subclass and new Exotic armor equipped.
Flavor text
Ikora believes you are ready for a final test of your Arc Light. Find the Devils' Lair in the Cosmodrome, and unleash the storm against their Prime Servitor.
Ikora believes you're ready to channel the currents of Arc Light… without backup.
Test yourself in the Solo Ops playlist and unleash the storm against your foes.