Replaced killable guards with unkillable security, to enforce the intended gameplay of killing the cheerleaders as they roam the factory. This also makes killing the guards no longer a requirement for completing the level. Moved a door that kept being open because a guard happened to be near.

Removed a saw-table that could kill security that should not be killable. Moved some props around that could not be activated by the player.

Replaced several player-hiding spots with corpse-hiding spots.