Pick 8-balls go to the docks then go to the pink spot on the map. Above it there should be some stairs get on those stairs and shoot them with your snipper riffle.
if you have more questions on the game E-mail me knight_376@hotmail.com

I don't think picking up 8-ball is too hard for you.
For part 2 you have to use your uzi, press the aim button and shoot those guys on the base.