It is finally time for your physical test, subject 15837. You are no in control of the Portal gun, and you must now show us that you are a motivated enough test subject to complete all of the trails at hand using only your wits and that handy gun. Use your WASD keys to move around, and use your mouse to aim the gun. Use the Q and E keys to fire portals, or just use the mouse button to fire portals alternating between blue and yellow. If you go through a blue portal, you will appear in the yellow one, and vice versa. Make use of the portals to navigate your way through all of the tests and make your way to the exit door.