@asilentprotagonist: See, I disagree with that because you kill Logan in Dark Souls, if you see that quest through to the end. I think it's more likely that he just discovered Seeth's research like Logan did. And given the time between the games, and the fact that Logan was already quite mad, I just think it's not likely. How would he have become a King? The vibe I got was that Oceiros went mad after becoming a king. I doubt Logan could've pulled all of that off.
By that logic Gwyndolin shouldn't be in the game. Aldrich imprisoned him, and devoured him over time.You kill him in DS1 too. Some of the stuff is a little murky on whats canon, and whats not. Lots of kings in DS1, DS2 lore including the lion king were "mad" during their reign. He also wields Logan's one of a kind staff. It could be him, or Logan's successor. I'm leaning on it being Logan. Undead can live for a long time as we see with Andre.
Quite a bit of them are answered, and some left even more mysterious/interesting in typical DS1 fashion. It has some direct connections, and confirms some things especially regarding Gwyn's family, The Painted World, Seath, The Everlasting Dragons, Artorias, Sif, The Abyss, Havel, NPC's from DS1, DS2, The Giants, and much more is explained, or given more exposition.
Oceiros the mad king is Big Hat Logan for example..
The Princes boss fight was the best boss fight in a souls series by a mile for me. The bosses in general were incredible. Enemies, Music, locations were just exceptional. One of those games that I never wanted to end while playing it. I think it's better than Dark Souls 1, but I've got to do repeat playthroughs, NG, and check out the PVP scene some more. Unlike BB, DS2 all the excellent ingredients are here so it's going to have the life span of DS1, i'm hoping.
The difficulty is gradual unlike past souls games. Wait until you get to the mid point - end game. Large bosses are actually more enjoyable to face here. The game has plenty of bosses that are the classic souls difficulty, and some beyond. It's struck the perfect balance for me so far.