>>44308676That's the way DS1 operates I think. O&S are the difficulty climax. After that it's choose your own adventure, and they're all about the same difficulty so you can go at them in whatever order. So then the difficulty plateaus all the way to Gwyn as you get stronger. Of course then there's the DLC that throws a wrench in the mix.
>>44308946Artorias, Kalameet and Manus are the hardest bosses in the game. Oolicile as a level is hard but fair(er than Grave of the Giants)