completed this yesterday and now playing through on the hardest difficulty and aiming to get the "ghost" as much as possible.
one of the best games I've played in years, up there with the first Metal Gear Solid, they did the Deus Ex name proud with this one.
those complaining about the boss fights need to wind their necks in, they are a nice little old skool patische and even if you haven't tooled up for combat their is always guns, nades and environmental "tools" to use. Infact the only difficulty I had with the 1st boss was the fact I'd skipped a tutorial about throwing stuff and so I kept running up and dropping canisters and explosive barrels beside him like a tarded noob, once I worked out that you can throw objects I did him first time on normal and again on hard.
Really is an awesomely immersive game, I can't remember being this sucked into a world or story since fallout3 and the the first Mass Effect, (Mass Effect 2 was a disappointment for me in how they structured the the whole narrative in very jarring "stages").