First of all the key binding system is broken. When I assigned shift for crouch and caps lock for sprint the sliding simply refused to work. When I tried to assign mouse button 4 (simulates the "." key press) to melee once again it failed to work in the game (it assigned it in the config screen though) . So now I find myself playing the game with a layout that I'm not familiar for the simple reason that crytek managed to **** up this simple aspect.
Speaking of things that don't work the melee system comes and goes. Sometimes it works sometimes it doesn't. Like a bug that triggers it to stop responding that gets reset back god knows when. I often found myself facing an enemy, pressing the melee button to punch his lights out just to stand there looking like an idiot because my character refused to do anything.
Also, when my character is low on health or sometimes during big explosions the screen goes black. As I play it on hard without using cloak too much I often find myself low on health at which point the game turns useless to me as I can't see anything. All I can do is resort to cloak and hopefully when the screen will clear up I won't be dead.
Here's how it looks like:
http://img593.imageshack.us/img593/8167/crysis22011032612534666.jpg
http://img651.imageshack.us/img651/3883/crysis22011032612533949.jpg
Lastly there's the cover system. To say it's atrocious would be an understatement. It's completely and utterly retarded and the people who implemented it should be ashamed of themselves as its a prime example of BAD game design. I understand that lean (the classic yet perfectly working formula) had to sacrificed due to the game being multiplatform but that doesn't mean we shouldn't get a working system and there's clearly no such thing here.
First of all it decides for itself what objects it wants to snap to and there were countless instances where I wanted to lean but the system wouldn't allow me. I'm not sure if those lean positions are manually set or if the game automatically determines it but it fails either way.
All in all these are minor aspects that completely break the game for me even though in the few times that it works it's a blast to play. Crysis 1 had no such issues. Crysis 2 feels like its retarded brother by comparison.