Check out the Max Payne 3 Multiplayer video below; it shows off the Gang Wars game mode on the Tiete River Docks. Pla-ow! Pl-aow!
In this mode, you'll try to grab the heavily defended drug packages from a rival gang and not get your wig split in the process. As you can see, Brazil is a tough country, and making off with the "flags" is not going to be an easy trip. Dudes are hanging out in higher vantage points, just waiting for a duck like you to run by.