Red Light Green Light
Everyone remembers that child game where you need to stop moving when the main player says so. If you lose the balance, you will be dismissed from the challenge. Rules of this play are exactly the same. With one little amendment: if you lose, you die.
So, sharpen your auditory sense and bind it to reflexes. When the way is green, move as fast as you can towards the host. But when they say Red light, take the hands off the keyboard immediately. In another case, the wall guns will shoot down your character. Good luck, you have a few minutes to cross the field!