Grand Theft Auto III/The Exchange

Brief
Claude arrives at the mansion and hands over the money to Catalina, who reneges on the deal and walks off with the money, leaving Claude at the mercy of her Colombian Cartel men. Claude is put at gunpoint by a Cartel gang member, but quickly escapes by punching him and taking the pistol he dropped.

Walkthrough
After being shot at, he gets a car and exits the mansion only to find a helicopter hovering above him which holds both Catalina and Maria. Claude follows the helicopter all the way to the base of Cochrane Dam and kills every Cartel goon on his way.

After coming halfway and nearly closing into the helicopter, Catalina drops off Maria at the loading bay, guarded by a couple of her men and reenters her helicopter. Catalina's chopper fires missiles at the ground while Claude gets to Maria, kills all the Cartel men. Claude picks up a rocket launcher to shoot down Catalina. After a few initial missed shots, he successfully manages to hit the helicopter and it crashes against the dam in the water. Afterward, Claude and Maria walk together holding hands as they cross over to the other side of the dam.

While the credits are rolling on the screen Maria can be heard talking right before a gunshot, after which, she remains silent and is no longer heard. The news also report the crime scene with witness Clive Denver.