Here's a breakdown of what happens to Shadow in Sonic Adventure 2 Battle:
Story Recap:
* The Beginning: Shadow is awakened by Professor Gerald Robotnik, who tells him he's the ultimate life form created to end war. He is programmed to believe that humans are evil and responsible for the destruction of his home planet.
* Project Shadow: Shadow is trained and used as a weapon by the military. He escapes and becomes a target of the government, leading to him being captured and frozen for fifty years.
* Awakening: He is revived by the evil Dr. Eggman (Eggman's grandfather) and is manipulated into believing that Sonic the Hedgehog is responsible for his past suffering.
* The Mission: Eggman tasks Shadow with destroying the world, believing this will fulfill the prophecy of the ultimate life form. Shadow reluctantly agrees, believing this is his destiny.
* The Truth: Shadow learns the truth about his past and his connection to Maria Robotnik, Gerald's granddaughter. He realizes that Eggman has lied to him and that he is capable of choosing his own path.
* The Final Battle: Shadow faces off against Sonic in a final battle, where he confronts his own internal struggles and chooses to side with the good. He sacrifices himself to save the world from the Biolizard, a creature created by Eggman from the power of the Chaos Emeralds.
* Ending: Shadow is believed to have been destroyed, but he survives and leaves the planet to search for his own purpose, vowing to never again be a weapon.
Changes in Battle:
* New Content: The Battle version of the game features additional gameplay elements like new characters (Cream the Rabbit, Big the Cat) and missions, as well as the ability to fight other players online.
* Shadow's Story: The main story arc remains the same, with no major changes to Shadow's character development or motivations.
* Gameplay: Shadow's gameplay mechanics are refined, including new moves and abilities that enhance his combat prowess.
In essence, Shadow's journey in Sonic Adventure 2 Battle mirrors the original game, focusing on his awakening, his manipulation by Eggman, and his eventual redemption. The Battle version adds more content and gameplay enhancements, but it keeps the core narrative of Shadow's transformation and his journey of self-discovery.