Hi, this is the news and rumours section, please take a look at where you are starting threads. Moved.
The only way to get the rules for the game are through Crusade of Fire, available from GW.
I haven't played them but by owning the book, I have read them and they seem pretty fun. The idea is you use a character against hordes of enemies, gaining fame as you defeat them (equal to their points value). There were small rules such as no instant death and a small card system where you draw a hand and can use special moves which correlate to your opponents.
I wouldn't buy the book just for the rules, 10 years ago they'd be in a White Dwarf but hey ho, it is a sign of the times.