When you go to a crime area controlled by the police,you will be assigned a task involving a random gang. On completionof the tasks the effectiveness of the police will be increased(as seen by the rings around the police symbol on the map). Themore rings you have, the harder it is for gangs to take controlof police-controlled areas and the more likely it is for the policeto take over gang controlled areas.
Choose any of the gang patrol missions (Apocalypse,Dragon Tails, H-Bombers, Waste Tribe) and defeat all of theirmarked territories that match their logos to earn 3 experiencepoints.
Complete the game to unlock Arena mode under the extras option.
Defeat Venom at the grand finale mission to get the Black Spiderman Suit as a unlockable.