Open and load your current PCSX2 memory card file (usually found in your emulator's memcards folder). Click the Import button (green arrow). Select your downloaded Urban Reign save file.
If you prefer not to use external save data, specific codes can be entered at the "Press Start" screen to unlock features temporarily; saving your game afterward makes these unlocks permanent. urban reign save data
If you want everything unlocked immediately, you can download a complete save file and "inject" it into your memory card. For PCSX2 (PC Emulator) Open and load your current PCSX2 memory card