Just been playing this on my PC and its much better than Crysis, doesn't look as good, infact its going to take one hell of a game to beat the look of Crysis, but in terms of actually being a decent games this is miles better.
One thing to note to anyone, if you start on hard, no matter how much searching you do you will end up taking on a big daddy who is double hard to kill and extra fast, with just the wrench, which while I'd say isn't impossible, is pretty hard.
You'll have no eve and no ammo at all as everything double ammo to kill and there is no ammo, money in or eve, in anything or on anything.
There is hard and there is silly. I restarted on medium and its now its a bit easy, so play balance is a bit skewed.