This site is temporarily under construction it seems. Is there a direct link to the PDF?Wow, this is an old thread.
The rules are not available as a direct link, as far as I know. They are available for free, at worldofindines.com. You need to register for the site, offering a sacrificial e-mail address Once you've registered, go to the "Downloads" section, and look for either the "BattleCON: PnP Demo Game" or "Devastation Core Rulebook". For some reason you have to unlock them, but the unlocking is free.
I really wish Level99 would remove these silly access control features. The rulebook ought to be downloadable without jumping through hoops. On a related note, it ought to be possible to browse the forums there without creating an account.
PS: Despite the crack about sacrificial e-mail addresses, I don't think you'll get a lot of e-mail from them, especially if you don't check the little box.