So I started playing this game and I am enjoying immensly. The only thing is that every time when I do a mission if a chooper shows up I'm pretty much fucked. Iv'e been been to every weapon store in the game and none have any rocket launchers. I tried shooting the sniper on it but it doesn't seem I can kill him. Any advice?
Right now I am doing a mission called "Taking Over????" and the chopper keeps messing me up.