Just finished it after playing all week. I slow-burned this game, dang this is the funnest game I've played in a LONG time.
Some really jaw dropping levels in this game, too. It's so satisfying stalking your enemies and systematically taking them out one by one, then calmly walking out as chaos ensues. Even when your disguise is blown, it's still super cool doing a "fake surrender" and using the poor guy as a human shield as you take out his buddies.
Can't wait to replay some missions that I brute-forced my way through the first time. This game is probably gonna go down as one of my all-time favorites.
SPECS: Intel Corei7 3770k, Nvidia GTX680, 16GB RAM, Win7 Pro