[Mad Melvin]

I got one of the robbers before I died. There were propably three or four of them and the whole thing was over in seconds. I generally try not to be an asshole towards other players, but I am starting to change my mind about that.

You need the game, but I believe there is a free version of Arma II. Don't know how that works with the mod, though. I bought mine from Steam, when it was on sale. You need the Arma II: Combined Operations pack, which includes Operation Arrowhead add-on.