In order to do this, the player must first make their way to the Pyramid room. They must then activate zero-gravity mode by standing on all four pressure panels untill the panels give off a blue glow around them.
The player must then wallrun over five panels with a blue symbol on the wall, excluding the one opposite the Pack-a-Punch platform. This doesn't have to be done in one go. Once all five panels have been activated, the BRM is revealed to the right of the wall panel closest to the pyramid and can be bought with 1800 points.