xDD Walking left-to-right? I'm not exactly sure what you mean, but I think it was the "x" button, whatever key that is, if you hold it and move around, that can make you run. Also, you can config your own keys! Whatever buttons you work best with, switch it to there! For me, I made the triangle "e", square "s", the x "d", and the circle "f". Place them in a way you can easily tap them and is comfortable with~

Haha, give it a shot! Don't hesitate to ask me for any more help. I'm a total geek when it comes to video games, so ffffff I'M YOUR WALKING VIDEO GAME GUIDE \o\