Hiya, I'll start this off by saying that I did have some fun with the demo here, but it wasn't all sunshine and roses.
I'll start off with what I enjoyed about it. It's visually appealing, the pixelated art style suites the game nicely and it's presentation is great. The story seems quite interesting given the little bit of exposition at the start, and the little clues scattered throughout the game. The atmosphere is a little bit tense, which is good given that this is meant to be a horror game of sorts. That about sums up what I enjoyed in the demo.
Now for some things I didn't quite enjoy about the experience. The backtracking, I don't know too many people who enjoy running back and forth between the same areas in search of the next plot progression point and it was certainly something that stood out as a problem to me. Given that this is only a demo, where the entire play session is only around 10 minutes, a fair chunk of that is filled with backtracking, looking for the next item/object to trigger the next event, but hey, what do I know about game design right? Next up is the flashlight, it's utterly useless in the current state. Made further useless by the fact that sprinting cancels it completely, this one is more of a minor thing to me. That's about all that I can say that I didn't like.
At the end of the day, you have an interesting idea here. A mysterious story, great art style, and a tense atmosphere, all the workings for a great horror game. Given that this is only a small chunk of the game the backtracking isn't a huge issue, however I don't believe that this segment was the absolute best way to showcase your game and get people interested in it. I will keep an eye out for the full release of the game, but if the demo is any indication of what the full release will provide...let's just say I'm not going to hold my breath for it.
I, like many others here already, recorded a short let's play of the demo for my channel, hope you don't mind.