I've already mentioned my opinion a few times in other random posts, but I'll go ahead and post here as well.
It's really disappointing that I just don't like the LoS games, especially since I remember being SO EXCITED watching all the trailers for the original Lords of Shadow. I thought it was going to be amazing! I remember being so excited when I got my collector's edition of the first game...only to be disappointed as I started playing it more and more. It just wasn't what I was hoping for. There wasn't enough "Castlevania" to me. I think Nagumo summed it up pretty well.
Ultimately, I don't think the Lords of Shadow games were bad though. I thought that over all the environments and the atmosphere were pretty good! Out of Lords of Shadow and Mirror of Fate, I thought that MoF was the better of the two, as it felt more like Castlevania to me, but I still couldn't even really get into it. Lords of Shadow 2 from all the random pieces of it I've seen on Youtube doesn't really look that bad, but I won't be trying it given how I didn't like the first two games.
I think my biggest complaint about the first game at least were the titan fights, actually. Those titan fights were actually what made me hate the first game the most. I also didn't like the music. The music wasn't bad by any means, but it just wasn't what I would expect from a Castlevania game.
I do think that there are good things about the LoS saga though. Like I said, I think they did the environments and atmosphere well. I also like the story between Gabriel and Alucard.