I think I'm one of the only people to have completed the game and actually enjoyed it.
Lacked a bit of depth, the main character was dull and it didn't run smoothly at all.
Apart from that I enjoyed playing it, definitely worth the £3 or so I paid for it.
Ran awesome on my 290I enjoyed the game (love the hacking tool and doing blackouts etc.) and once you installed the custom mods (read: enabled the graphics not shown in the option menu ), the game looked great but it runs so bad on my 290 yet on my 7850, it was pretty smooth, go figure.....
Upgraded to a 290 from 7970, every game's FPS increased by a nice margin except watchdogs, if anything performance seemed worse!
Now I see what everyone is so upset about.