I gotta say I'm addicted to this game. Took me a long time to even start it, but after seeing GAF recommend it so much I finally took the plunge. I take it a few hours at a time, and give myself a few days to deflate between plays, because it's so intense. I have become so used to hand-holding games, games that coddle you, that this game was a breath of fresh air. I have to admit I've consulted the wikia a lot, so I have really cheated myself to that discovery aspect, but I still enjoy the game very much.
O & S I ended up beating on my own, because I ran out of humanity. Solaire just ends up dying at the second stage anyway, so you end up being solo regardless. Right now I'm actually playing in tandem on xb360 and on PC, depending on when the wife is using the TV or not. Weapon of choice is a regular ascension Zweihänder (+13 at this point), so satisfying to knock fools down who have no poise. Slow windup doesn't even bother me, it's just so fun.
Is it me or is the Great Hollow and Ash Lake just a big waste of time? I didn't find anything useful in either area. I don't play online so the dragon's covenant is useless to me. Right now I've beaten 4 Kings and Seath, and I've ventured out to the Demon Ruins in one game and to the Artorias of the Abyss content on the other game.
I really don't want to try DS2 because I've heard a lot of what makes DS1 so charming has been taken out of this game. But I may get it on a Steam sale, if the price is right.