There are only four maps/levels available in the game.
Completing tasks unlocks more characters (there are a total of five).
"Revolution" mode is the campaign where you find resistance members (fist icons)...
... who give you missions to accomplish.
A colored arrow floats over your head to direct you to your mission objective.
Mission related characters have rings around their feet for easy identification.
"Chinatown" is second only to "crate filled warehouse" on the list of cliche game locations.