In the game's main storyline:
* Shadow sacrifices himself to stop the destruction of the world by the Biolizard.
* He is revived by the power of the Chaos Emeralds.
* He returns to space with his companion, Rouge the Bat.
While Shadow may experience near-death situations throughout the game, he ultimately survives and continues his journey.
It's important to note that Sonic Adventure 2 Battle is a re-release of the original Sonic Adventure 2 with added content, including new game modes and characters. The main storyline remains the same.