Excellent story with an incredible setting
They really did an excellent job and you can tell that a lot of work was put into this game, the story while a bit over complicated (especially the ending) was still one of the best put together stories i have seen in the last couple of years.
I do however have to note that while the scenery was beautiful to watch that i did notice some very low quality and muddy textures through out my play time on the Xbox 360 version, they seem to make use of bloom and the fog effect to hide some of the bad textures which seem to work fairly well while not looking closely at specific objects.
I will also say that after playing the PC version that all of these issues are non existent, the game on Ultra setting almost looks like a different game all together, if you have a PC that can handle the game at the higher settings then i would say that getting the PC version is a no brainer.
Overall an excellent game that is highly recommended.