Urban Chaos Riot Response - Boxed - PS2

In Urban Chaos: Riot Response you play the role of Nick Mason, a member of a new anti-terror team called T-Zero. Terrorists and gang members have destroyed your city, and your goal is to restore order to the city while also taking down every terrorist and gang member you encounter. Since your enemies are armed to the teeth (typically with cleavers, Molotov cocktails and sawn-off shotguns), you're equipped with a riot shield that you can use by pressing the left trigger. It can absorb unlimited shots, but you can't shoot while using it. You can call on the help of firefighters to put out fires, and paramedics to restore your health.
Your weapons can be upgraded by collecting medals during your missions. You can earn these medals by scoring headshots, apprehending enemies with your taser (instead of killing them), collecting gang masks, and so on. You can even unlock extra missions and weapons by arresting a gang boss at the end of each level, so the police can interrogate him and find out the gang's next move.