The game loaded without any problems. I have scaled the 2 casinos to disarm the explosives. The PC game says to hit the letter E to disarm, but it always failed. During the disarming process, you cannot do anything during the process. Have I overlooked something or is this a game hangup?
Make sure you are just tapping the "E" key and not holding it down. Otherwise, it'll fail. Also, if you are getting shot, it will fail. On the PC version when you hit the E key a window will pop up with several numbers in it (i.e. 4 1 3 2 1 3). You have to type those numbers in to defuse the bomb. But, hit the wrong key and you will fail. I'm thinking this might be your issue (holding the E key a little too long). That, or you're getting shot at.