Mass Effect 3

Story related. If you want more info, continue reading. Otherwise, know that this will unlock through the natural progression of the story.

Mission: Priority: Thessia
Acquisition - Automatic after leaving Rannoch.

After completing the quarian-geth missions, the asari councilor will contact you and tell you about an artifact on Thessia.

Insanity Tips:

• The reapers will have barrier generators set up in almost every fight. Be sure to destroy them first or you’ll have a hell of a time defeating even the most basic enemies.
• Where the turret is pointed at the beginning of the mission, ignore the enemies that come from that direction until they get close. Turn the turret to the left to focus on the area right in front of the barrier.
• After you reach the snipers and fight the banshee, quickly take out the barrier generator and then use the missile launcher on the banshee. Most of her health will be wiped out immediately. Back off down the steps you came up and lure her to you and away from the other enemies.
• Kai Leng isn’t a terrible boss battle, but the fact is that you can’t win. Once you get his shields all the way down once, the fight will end.