Just finished it
Visuals : A+, the game looks fantastic, loved the use of different primary colours in environments. Lighting in particular is extremely high quality, using very high resolution lightmaps and radiosity, it really makes the levels come alive. It's what kept me playing really, to see the next environment!
Gameplay : The running and jumping stuff is excellent, reminded me of Brink's parkour system but it feels better here, some areas were a little frustrating to figure out how to get through them but the game never relies on precision jumping and movement too heavily which is a good thing from my perspective. There were a couple of areas where it was tough to get the character to do the correct jump however and failing this usually led to my death by falling. Lucky the checkpoints are fairly well placed.
The combat is where it gets quite frustrating however, there are lots of melee moves you can do to take out enemies, or disarm them and use their weapons. But it never gets above mediocre. The guns feel pretty bad overall and these combat areas are the worst parts of the game, luckily they are not the main focus.
Really enjoyed it overall, would recommend it if you haven't tried it out yet.
Screenshots -
http://steamcommunity.com/id/darrenweekes/screenshots?tab=public&showdate=1&filter=shortcut_179