Don't let the "kids" element of the site where this game is hosted fool you. This game is all about timing and for the first couple of attempts it actually pwned me because I was key spamming. Your character is freerunning through the city and you have to have good timing using the space and arrow keys. When you get prompted for a key, press it ONCE. There are a couple of areas where key spamming is good, like climbing up walls, but there are one or two areas where it will stop you before you realize it. I'll let you discover those areas for yourself if you don't heed my advice.