(Closing the door will make him go the other way.) It is also recommended to turn off the electricity to neutralize security cameras which get the Neighbor's attention. You don't have to close the back door when exiting the room because the Neighbor will become suspicious and will go to the boiler room, after realizing the valve has been tampered with. Go in through the back entrance and turn the valve on the furnace, this will freeze the water in the flooded room upstairs. This alpha is the trickiest because the Neighbor seems to always be in Hunt Mode and rarely goes in Idle Mode, and can be triggered very easily, so read carefully. The protagonist unlocks the house and moves their belongings inside.
The camera goes into first person and the tutorial begins. The Neighbor picks up a pair of binoculars and observes the protagonist drive onto the street. You cannot see them even though the camera is in third person. In the beginning, the protagonist is in their car, driving to their new house.