[Joker1314]

voloddia, http://demonssouls.wikidot.com/end-game

Option 1 - The Good Ending: Turn around and walk away after the Maiden in Black's speech. By doing this, you get the Maiden in Black's Demon's Soul (60,000 souls or Soulsucker from Yuria, the Witch) and a Trophy. You have saved Boletaria and the rest of the world, by allowing the Old One to be put back to sleep. You did not give in to the lure of unfathomable power, even though you have tasted such power, as you collected souls from each demon that you defeated along the way. The world's knowledge of the Soul Arts will be lost, and the fog will be lifted.

Option 2 - The Evil Ending: Kill the The Maiden in Black. By doing this, you get the Beast's Demon's Soul (200,000 souls) and the Redeye Stone. You have succumbed to your appetite for souls, and condemned the entire world in order to satisfy your own lust for power. As Sage Freke, the Visionary suggested, with Allant and the Maiden out of the way, you will become the world's ruler, and Freke shall learn all he ever wanted to know about the Soul Arts, realizing the true power of demon souls… but King Allant XII also thought that he could control such power.