Eris sees no cause to celebrate. "This was not a victory, Guardian. It has merely bought us time."

Even though Calus was defeated here, he is not gone. He has become a herald of the Witness and the harbinger of the second Collapse.

"Calus may be gone, but the Leviathan remains, and it will take months to clear out the rest of the Nightmares and ensure it is no longer a threat," Eris says.
"But even those efforts may be for naught. We have reached the point of no return. The Witness is near."
"It is the beginning of the end."