Embarrasing Fact: Power suit made by lowest bidder
The fact that you beat the game is saved actually (though I forget exactly when during the ending it saves that fact), but the only thing that does is unlock a few more demo movies when you wait at the title screen. madadameyohn
This was a minor gripe of mine back in the SNES / MegaDrive days - having to reset games after completion. It seemed like they all wanted to just sit there doing nothing.