Spiderman
Climb up as high as possible into the corner/alcove of a room or corridor and wedge body into position, with one foot in the highest corner.
1
Locate yourself at the side of a staircase, facing sturdy banisters with a handrail with a gradient of approximately 45 degrees.

2
Grasp handrail with both hands and put one foot on a step, in space between banister spindles.

3
Raise body using arms and climb the outside of the banisters.

4
Moving feet between banister spindles, make your way to where the banister meets the ceiling/wall.

5
Place feet on any available ledge, such as a door frame.

6
Raise one foot into uppermost corner of the alcove.

Notes
Strong arm muscles are required for this move and a spotting partner is essential.