You should try again before you go claim this to be mission impossible. Hiding behind the rock is not a problem, just don´t get TOO CLOSE to it. When enemies launch missiles at me and I hide behind rocks, I back up a bit if possible, or else I will take some damage even though the missiles hit the opposite side of the rock. Just back up 1-2m and you should be ok.As for the succeeding to sneak all the way into GDI powerplant or tower as black hand, I have never got that far myself either, but it must be possible anyway. If someone else on your team are attacking the base, the tower will aim for them eventually, then you get your chance.
Hidden
[ March 14, 2002: Message edited by: Hidden ]