Just play the short campaigne, get fifteen provinces and defeat your rival, then all the playable factions will be unlocked. However to unlock the unlockable ones, you have to edit the descr_strat file.
Never lie, steal, cheat, or drink. But if you must lie, lie in the arms of the one you love. If you must steal, steal away from bad company. If you must cheat, cheat death. And if you must drink, drink in the moments that take your breath away.
Winner of 2005 OD : Best Ownage, Funniest Newbie, and Dinoman Award
"Mastering Others is Strength, Mastering yourself makes you fearless -Lao Tzu"