I am fairly new to Portal 2 speedrunning and I have a run for The Surprise and it would be in 24th place. It says you need demos for a run in the top 25 and I DONT KNOW WHAT THEY ARE.

I was interested in running 12 levels Nonstop but I don't know how to make the hack work.

I was just about to post this video and submit the run when I had just heard the game audio and OWWWWW MY EARS!! Does anyone know why this could have happened?

My run of red ball got rejected because I didn't make the game fit the screen better. Does anyone know how to do that?