Once you beat the final boss of a story line, you get to see a short cutscene of what Shadow would do if he chose this path. Here are some of the endings:
1) Shadow goes bad and rules the world
2) Shadow goes worse and rules the Universe
3) Shadow goes 100% evil and BLOWS UP the World (you don't get to see it though. Bummer.)
4) Shadow goes neutral and rules an army of androids to conquer the earth.
5) Shadow goes neutral and uses the chaos emeralds for his own power
6) Shadow goes good and just mopes around knowing that he was built for evil.
7) Shadow goes good and defeats Balck Doom.
8) Shadow goes 100% hero and Destroys all the Black aliens with Black Doom.
1-3) Shadow destroys Sonic
4-5) Shadow EXECUTES eggman (It's totally AWESOME!)
6-8) Shadow Beats Black Doom
After you beat the last story, Shadow destroys the BlackComet with the eclipse cannon and the world lived happily ever after. By the way, There's a secret about Shadow that you find out by going all neutral, but you can find that one out for yourself.
Added by: cugino Dec 1st 2005, ID#5039