The environment was actually pretty well done! I managed to iamgine noises that weren't there are the end jumpscare wasn't bad either! Only suggestion is to maybe have made the creepy monster thing show up beforehand as a foreshadowing moment, and then the end would seem tied together. Overall, a a solid horror game though!
(Also, were there multiple endings? I didn't go to the telephone, so if I went there and didn't go to the basement, would that have been a different ending?)