Got all artifacts in Cooling Springs.

Cleared the game and got the New Generation artifacts.

Got all puzzle pieces in Memory Meadow.

Got hit by flying garbage in Memory Meadow.

Complete the "Shattered Throne" dungeon.

Win a Gambit match.

Earn 5,000 Triumph points.

Encounter an Agent of the Nine somewhere in the system.

Complete a Nightfall strike on Master difficulty.

Reach level 20.

Acquire each Warlock subclass.

Complete a Heroic public event.