Just finished the game my thoughts:
In a nut shell:
I enjoyed it from start to finish, great story and the level of detail in the level design is amazing (from a mod mapper)
I must have spent 60 hours in the game, but I explored every nook and cranny and did missions in different ways before i was happy
The story keeps you interested and focused and it feels like you can either take the direct plot route or explore for secondary missions but I found I had explored and looted locations earlier thinking it may be my only chance only to see them only to get sent there later in the game
. The only saving grace here is that you have already (if needed) taken down the bad guys.
The game generally seemed a bit easy on the "give me a challenge", I finished the game with 11 praxis unused and 185115 xp and most of my best weapons with full ammo.
I did like how you die quick if shot and I dont mind the renewing health as that just replaces quick save/quick load scenario and the load times are a bit slow (though there is more information saved than in most games)
So.
Positives:
*Amazing graphics, though I still had jaggies at the highest AA.
*The best level detail I've seen in a game (though Ive not played a few new titles)
*Nice story, keeps you interested throughout.
*Good length.
Negatives:
*Not as big and explorable as Dues ex 1, but the time sink was replaced with the hacking - see below.
*Too much hacking, I didn't want to go the hacking route but It felt like you were missing things if you didnt. Hacking was still too easy but took time, I ended the game with 37 nuke virus and 30 stop worm and captued all bonus nodes.
*The Augs seem a little underwhealming/uninteresting compared to Dues-ex1 and not necessary to complete the game or explore, I was only spending them as I felt I should when I got upto 10 praxis points.
*Customising guns seemed to add little, yet you felt you had to keep hold of a customised gun.
I love it. But really, the shades and heavy arm are the coolest 
