In this game you have to listen carefully, find places to hide, and also the ways to escape the flat. Also, you can use a mirror to look behind the corners and behind youself. Move between rooms of your flat silently, without making any noise.
The main point is the awaiting for the main hero's parents, however, you can try to find the phone and call the them or find a keys to open a door and leave the flat or try to do find another ways to do that and try to avoid the stranger in your house.
Our article about this game here: http://welovebundles.ru/its-in-reflection/