You're a golf ball, and the only way out of here is down. You have until dawn.
Drag back and let go to shoot, or aim with the arrow keys and press Space.
Roll through light all you like. Stop in it and the red ring round you fills, and when it's full you're caught: back where you dropped in, plus a stroke.
Right in front of a guard, or at their feet, they see you fast. Bump one and they feel it.