Head N Revolver
It is a very tough world out there and you need to sand up on your own if you want to leave. However there are lots of hoodlum around and they won't let you be, so you need to fight or they would just go back over and over again to get some money from you. In this game, you need to shoot the enemy in order to leave. You would get some cash from doing that and you can use it to buy accessories and guns after every round. The game gets tougher and more challenging as you make some progress.