As soon as his "core" cracked, unrestrained and limitless power surged within him, but he didn't have enough to leisure to relive that feeling since he knew within in a matter of minutes, his existence would cease to exist.
But,
He now possessed the consciousness of his loved one and the will to live with her, hence he wasn't foolish enough to want to sacrifice himself to kill his enemy.
He had a plan.
A plan that would make it so that none were above him.
With that plan within his consciousness, Eshwar disappeared from the spot he stood, and reappeared somewhere that didn't exist within the universe nor did it follow the rules of the universe.
There was nothing in front of him, but he knew that what he was finding was within that nothingness.
There existed another lawless universe where his enemies, the gods, lived.