Artorias is the best one IMHO. Every single boss is amazing, the areas after Artorias are very good and the first area is all right I guess.
Old hunters has great bosses too but I wasn't too fond of the areas (apart from the visuals, that seaside village was eery as hell, very well done), a lot of the normal enemies weren't that fun to fight. I loved the challenge in NG++ though, that was by far the hardest content in the series.
The dark souls 2 DLCs have their ups and down. Most bosses are good to great, but some of the areas are tedious (crown of the iron king, almost all co-op areas) because either the enemies aren't that interesting or you've got too many of them.
Old hunters has great bosses too but I wasn't too fond of the areas (apart from the visuals, that seaside village was eery as hell, very well done), a lot of the normal enemies weren't that fun to fight. I loved the challenge in NG++ though, that was by far the hardest content in the series.
The dark souls 2 DLCs have their ups and down. Most bosses are good to great, but some of the areas are tedious (crown of the iron king, almost all co-op areas) because either the enemies aren't that interesting or you've got too many of them.