History of Break a Leg

Break a Leg requires you to defeat Hasapiko during a Heroic Menagerie run without any fireteam member dying. It is worth 20 Triumph points. I could not confirm which seal it counts toward from the sources I opened.

How to complete

1. Run Heroic Menagerie on a week when Hasapiko, Beloved by Calus is the boss.
2. In the shielded phase Hasapiko is an Ultra Minotaur with a torch hammer who summons Vex. Kill three Major Harpies (Hasapiko's Living Firewall); they drop Disruptor Charge pools that let you break the shield.
3. In the damage phase he casts Walls of Deletion that instantly kill anyone who touches them. Keep everyone out of the walls while damaging him. Below one third health he casts two walls at once, so avoid reckless damage in the final phase.
4. A creator video shows the triumph done solo, which shows it is possible with careful play.