Left and right arrow keys to look around. Up and down arrow keys or W and S to move forward and backward. A and D to strafe. Space to turn flashlight on and off. Flashlight battery drains by 1 for every half a second its on. The scanner is just there for design. The map at the top right helps you navigate (kind of) Field of View (FOV) is automatically set to 30 and can't be modified to make the map look bigger than it is.
Credit to Griffpatch for the 3D tutorial.
