Lay some smack down on them thugs in the streets. Each level has its bosses so defeat every level boss to continue, just move forward to the edge of the screen to go to the next level. Try using the specials indicated on the options menu to whoop those baddies quicker.

Instructions:

Movements = AWSD
Kick / Punch = J Key
Jump = K Key
Recharge = L Key
Pause = P Key