First playthrough complete at 6 hours. And hoooooly shit, what a ride that was.
Plain and simple, this is the next Deus Ex game that us fans of the original first iteration have been waiting so long for.
So much choice has been slathered over this game. Multiple ways to tackle any objective, be it outright blasting away (With the right augments), sneaking and stealthing your way around your enemies and taking them down with some CQC, or hacking and smooth talking your way though everything.
I know I missed quite a lot of side areas/quests, some of those places I could not reach with my first augment "loadout", but I will be gladly going through this game multiple times.
Control is quite tight, sneaking and moving around pretty intuitive, the classic Deus Ex 1 inventory and ammo system makes a polished return, and there is quite a large selections of augmentations you can choose from.
Can't help but feel a sense of "Metal Gear Solid" while playing this. In a totally good way.
I'm a bigger X-Strike fan than you.