Unfortunately there is no manual available. As far as I've gathered, it was never really published either (the HotU copy is a leaked final version, which is evident from the .txt file in the Zip that includes an e-mail to the publisher).
What's worse, it has a nasty bug that makes the game completely unresponsive (and thus unplayable) after a handful of turns, no matter what you do or don't.
It's a real let-down, as it is a very promising game with a unique setting.
