One of the many obstacles.

A narrow corridor is entered at walk and a bell rung at the end before reversing, calmly, correctly and in a straight line out of the corridor.

Two barrels to be circled  in a figure of eight. Correct changes in the middle of the barrels and keeping each barrel in the middle of each circle make for increased marks.
The barrels are set
 8 metres apart, so the radius of each circle should be 4 metres!