Turns out I was playing 25, 26 was better. Finished the game and other than a few complaints about overpowered weapons and some supernatural stuff it was all good.
The final boss fight was pretty good actually, not as good as some of the earlier ones, but one thing is for sure it was about 10 times better than the boss fight at the end of the first one.
Least favorite chapter is 25, favorite ones were the museum, the train chapters and the way to the expedition.
Overall it's one of my favorite games of the generation, but I don't know if I can call it my favorite, I need to go back and try MGS 4 and Bioshock then I can give a straight answer on that, basically it's right up there with the best.