Page "Metroid Prime 2: Echoes" Paragraph 12

After Samus has retrieved three pieces of the Light of Aether, she enters the Ing's Sky Temple and faces the Emperor Ing, the strongest Ing who guards the remaining Light of Aether in the Dark Aether.

Samus defeats the creature and retrieves the last remaining energy as Dark Aether collapses ; however, her path out of the temple is blocked by a horribly altered and unstable Dark Samus.

After defeating her foe, Samus escapes as the world disappears around her.

Returning to U-Mos, she finds that the Luminoth were in a frozen state but have now awakened.

After a brief celebration Samus leaves Aether in her repaired gunship.

If the player has collected 100 percent of the power-ups, a post-credits scene shows Dark Samus reforming herself in deep space.