Since the game unlocks a class for the whole save data for other playable characters, this allows players to cheat the system on gaining it. 1. Save your money. Save first, then buy all the manuals for classes, use them, and reload. You'll keep all your money and the classes are unlocked. 2. During the time you're in the Fade rescuing Conner, save before talking to the Desire Demon. Ask for the Blood Mage class first.. Once all the cut scences are over, just reload and you can choose something else. 3. Allister, Morgan, and others offer job classes. Just save up all the gifts and save the game. Give all the gifts to one friend. Talk them into teach you the class, then reload. Class is unlocked and you still keep the gifts.