I've never played P.T. so I can't comment on similarity but I did like how you did this game format. It was full of suspense. I wondered what I needed to do at first but the linear gameplay helped build the story. You did a great job with the modelling, especially with the monsters. I did notice that when going back up ramps my character seemed to get caught on them a few times.
Forever thankful the mini game was skippable as I was beginning to suffer getting caught in the numerous hallways, haha. Regardless, nice job!