I was surprised by how good this game was as I heard people call this the worst souls game (it's not). In some ways it is the most unique one out of all of them and a lot of the differences are welcome changes which make the game really fun. Stuff like the healing being slower made it so you have to play every encounter a bit more carefully, and the rolling being tied to attributes makes choosing what to level up an important decision. This was the first time a story in a souls game actually piqued my interest and the narrative coming together at the very end was really satisfying.
But there are some problems with the game, particularly a few of the later bosses and locations were a bit of a letdown and number of enemies in some areas makes fighting large groups of them quite frustrating. (However, the boss runbacks with them were challenging in a fun way)
Well, I usually mention a few bosses here that I really liked with these games so my favorites would probably be the pursuer and lost sinner from the main game. The later DLCs were cool as well with fume knight, sir alonne and burnt ivory king.