Use your psi-powers to help the Master to reach the exit. Bounce off NATURAL surfaces (Earth, wood) to recharge your psi-jump. Touching INERT surfaces (metal, stone) doesn't recharge your jump. Avoid the spike pits. There are 30 levels to master, and a bonus Soul Mode to unlock.
Look out for strange characters who may or may not have helpful advice...
Aim in the direction you want to psi-jump using the mouse, and jump with the left mouse button. [Esc] to return to the menu.