It's not brain surgery, just run, point and shoot. But there are a few more features that add to the excitement.
There are a number of weapons available in UrbanMercenary. And that number is 9. Each weapon has a certain range where it is most effective and a certain amount of ass kicking that it can dole out. All players have access to all weapons at all times in the game. There are no hidden weapons and no power ups. Energy for the weapons comes from the power supply in each player's armor, and the same amount of firepower is available to everyone. You start the game with all the weapons, armor and energy that there is. You do not have to look for more guns, power-ups or friggin' keys. Your only job in there is to kick ass.
The game also offers an Internet play option.