Quote Originally Posted by Neo
But I AM glad that they put in the part where he broke free from the Chains of Heaven, the supposedly unbreakable chain that no God or Demi God could escape from.
My interpretation from that scene was that Heracles was so devoid of life that all divinity had left him, allowing him to exploit the weakness of the chains (that they bind non-divine being less strongly than divine beings). That's given the way it was animated though. My impression when I read the novel may have well been the same as yours.