Very Good, no complaints.
Excellent graphics, well balanced story and notably lacking in the unsolvable puzzle flaw that many of this type of game suffers so heavily from. Indeed I only used the walkthrough three times and two of those were because I just didn't think about the clues. Only the use of the Buddha statue got me, and I don't think you can work out what to do from the clues in that one case.
Music was atmospheric but didn't overpower or irritate. The two pieces of cinematics were very good and satisfying.
The captain's aid was well balanced, not telling too much but providing good help when I got stuck.
It was the right length, right pace etc.
My only criticism is about what wasn't present. I think it would have been nice to have a few bonus sub plots that you could discover, such as in a dead guy's suit memory or to find out a bit more about the... antagonists. These would be optional and may even be rewards for putting together very hard or very subtle puzzles. I was a little disappointed that when I typed in the codes for all the options only the ones for the relevant plot points worked. I expected a result for each.
Finally, soom lethal options would have been good, to raise the tension a bit more, but it didn't suffer from the lack of them.
One of the best in it's genre.