User blog comment:Garhdo/Unhappy with the ending? Make your own!/@comment-4950455-20130226063223/@comment-1440333-20130226194024

The guy has a comment underneath it saying which variables unlock which ending. Its more dependant on War Assets acquired, such as Daro'Xen's research unlocks his version of Control, and Kal'Reegar surviving Haestrom helps unlock the Destroy ending, which features Dark Energy that can destroy Sol.