Hobo 6 is the game you should try out if you want to play the role of a homeless man who doesn't mind puking or spiting on the people around him to get ahead.
Your character will constantly be attacked by people, so you have to keep your finger on the A, S and D keys. You can press the P key if you want to see which combination performs each attack or you can simply press these keys and your hobo will start attacking everyone around him. You can move in every direction with the arrow keys and you can run if you double tap the left or right key. There are quite a few levels you need to go through and the only way you can advance to the next stage is by killing every person you see. Sometimes you will be attacked by moving cars, but you can destroy them with your regular fighting moves. If you run out of health, you will have to start over from the beginning of the level. You can't save your progress in Hobo 6, but you can write down the pass code you receive at the end of each level. This way, if you return to the website you can input the code and start from your last stage.
Hobo 6 is a very funny game and you will like performing all of the special moves against your enemies. This is not the most difficult game around, but it is certainly worth playing.