Office Horror Story Explore Office, Stairs and Basement. Find out the horrifying story about the Mad Killer. - 16 levels to play - 2 melee weapons - Puzzles to solve and objects to find. - If you like Horror Games, this one is for you. Instruction W A S D to walk around Mouse to Look around Left Mouse Button to Fire Right Mouse Button to Aim Mouse Wheel To Change Weapons G for Grenades F to Pickup Items Left Shift to Run Left CTRL to Crouch X to Prone Space to Jump