Even though it's not in English, this is a simple game. All you do is use your mouse and keep the drunk from falling down for as far as possible. Just post the farthest distance that you can make him walk. http://www.wagenschenke.ch/
The max I've gotten was 52 as well, but that's only because this laptop sucks. I can get about 70 on the other computer.
First try: 2 metres :chemist: Oh wait...I'm doing 70 now Dude I love this game, thanks for keeping me occupied XD