Calibrate data and defeat targets while using Grand Overture. 

Calibration occurs when you complete Vanguard Operations, Gambit and Crucible matches, Seasonal playlist activities, or Nightmare Containment public events.

Higher-tier Nightfall completions, Crucible and Gambit wins, and defeating Guardians provide additional progress.

Heavy Does It

Banshee-44 has ideas on how to repair the broken catalyst for the Grand Overture Exotic Machine Gun. 

With your help, he can make it more potent than ever before.

Complete activities in Vanguard, Gambit, and Crucible playlists; defeat targets using the Grand Overture Exotic Machine Gun. 

Higher tier Nightfall completions, Crucible and Gambit wins, and defeated Guardians provide additional progress.

Destiny Definitions Archive

"Heavy Does It" diff