These guys got 99 of every Boss Demon Soul in the game... NG+ is tough enough, what about NG+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++... you get the point.

http://www.siliconera.com/2009/12/30/this-gamer-gave-their-soul-to-demons-souls/ 

Bet I could whoop him/her in a PvP match! lol jk.

Pretty time consuming achievement. Congrats to him/her.

I lol'd at this comment:

"My mother once said to me: "if only you put as much time into studying as you did into video games, you could cure cancer."

So going by that measuring stick, this dude would have cured every disease in space and time and still found spare millenia to bring about universal peace and harmony between man, nature, and non-sentient life like rocks, water and Al Franken."

by the gods...