I want to start by saying this is NOT bad. A few things definitely took me out of it. And it's spoiler heavy, so if you're seeing this before playing stop now and check it out first.
SPOILER TERRITORY:
This is all subjective opinion, and I mean no disrespect. Some may love this game, some may hate it, these are just my takes.
-Crosses turning upside down is not scary or effective. Especially not constantly in this short of an experience.
-The "Entity" was never effective. Saw it, heard the "whoosh" noise, it was gone, and it didn't evoke more than an "Okay" from me. Happened constantly. Killed the potential for effect. Never came back up, don't know what it was, don't know why it was involved.
-Character model is too goofy. Realistically today somebody in this situation probably WOULD be in track pants and hi-top sneakers, but it just looks silly against this environment. Walk cycle is very "Jubi Slide" and comical looking. Also CANNOT buy that THIS character's name is Demetrius Black. Looks like a dude named Kellan who makes YouTube reaction videos.
-I DID like the use of Bible verses! It showcases the absurdity of biblical doctrine and how it can be interpreted and bastardized to be hurtful. Matching the context to the clues for keypads was a cool mechanic, too!
-A little bit of cinematic would have gone a long way for the conclusion. Show our character attempting to approach the sister at least before cutting to text. Otherwise it looks like he walked into the room, said "Damn that's crazy" and it ended.
There is a good story with a lot of potential here! I hope if the creator reads this they can see what I mean and use the criticism for future projects because the foundation is solid and the possibilities are huge!