I'm seriously stuck and an impossible part. I'm at the part where you have shoot down an Agents Helicopter in the airport. He comes and blasts me to death before I realize what hit me! How the heck do I get rid of him?!

Try this, maybe there's something usefull for you there. ;)

Hired it overnight for the Xbox.
Finished it with both Ghost and Niami :D

Immediately run to the pilar to Ghost's left (left of where you snipe from). Equip the SG?? gun. Hide behind the pillar -- flat against it. This is where the agent's helicopter will first appear. Do a focus lean-out shoot. With the SG?? (sorry I forget -- it's the assault rifle) you can down the agent's helicopter in one try before it goes away (on lowest difficulty level).

You have *got* to be kidding. The I don't even know how I passed the part with the first helicopter when the SWAT guys come! [img]tongue.gif[/img]

That is really hard to beleive. It took me 6 hrs and 6 mins to finish only "Niobe" ...

I possibly can't imagine how you did both in one day/night. If you used cheats, then yes i beleive you. But if you didn't, then you are a an absolute legend!!!

To beat the helicopter, i used the best machine gun i had.
What I did was; Focus, Shoooooot !!! Then applied same method for the second time and he was down.

No cheats, hired it out at 10am saturday morning and had it till 1pm sunday. Thats about 27 hours game time. I have to admit that I had to skip some of Niobe's movie clips because it was almost time to return it.