Portal 2 - Co-op speed run (Chapter 3)
The timer starts when one of us starts moving, and it stops once the transporters have closed.
Chapter 1: • Portal 2 - Co-op speed run (Chapter 1)
Chapter 2: • Portal 2 - Co-op speed run (Chapter 2)
Chapter 3: • Portal 2 - Co-op speed run (Chapter 3)