Until Thanos Do Us Part - LEGO Marvel Superheroes 2: Infinity War DLC

Set both Free Play Characters as Proxima Midnight and Corvus Glaive in the "Running the Gauntlet" - 10

Both Proxima Midnight and Corvus Glaive are unlocked by buying the Infinity War DLC.

Set both Free Play Characters as Proxima Midnight and Corvus Glaive while playing the level "Running the Gauntlet".

This is a play on words between the phrase "Until Death Do Us Part" and the Mad Titan, Thanos. Proxima Midnight and Corvus Glaive are both members of the Black Order and are also married. 

Corvus Glaive and Proxima Midnight