Poor console conversion.
You can only use certain keys (like clime & melee attacks) in certain places. The game seems to pause and jam until you enter certain areas which kills any atmosphere and make the game feels like you are on a train ride shooting as you go.
Although bullet ballistics are in the game, the bullet effects are off, I.E. if you shoot a hand rail the bullet effect is bigger than the rail, the graphics are ok but not fantastic for today's standards, especially when you re-spurn from a save without a weapon for about ten seconds
There was so much hype about the game play and bullet drop, its a shame the games basics don't work.
After playing sand box games like ARMA it may be me being spoilt, but this game feels like it should been release around 2008. I will probably un-install before completing.