Use WASD to move, and space to sprint. The beam following your mouse is your line of sight. If SCP-173 is not on you line of sight, it will move towards you. You cannot just stare at it forever, though, as a you have to blink at some point. Try to survive as long as possible.
This is V2.0: Hard mode update When you press 9 the crazy hard mode will be activated SO DON'T PRESS 9! Sight Updated for easier hard mode activation
