Many Crysis 3 gamers are facing a strange problem in the last level of the game. The problem occurs in the battle with the alpha ceph. In the battle when they kill the alpha ceph then a short cut scene appears and then a black screen appears and the game gets hanged. Well there is no solution from the crytek team as for now but there is way to bypass this bug. But this is only for the PC users having Nvidia based video cards.
All you have to do is to install the latest nvidia beta drivers 314.14 and restart the entire last level. After doing this you will not encounter this problem and you can finish off your game.
Download Nvidia Drivers – http://www.nvidia.com/Download/index.aspx?lang=en-us