My Little Pony + Slenderman? Really? ;) Funny concept.
I think that there's space for improvement with the 3rd person view at the start (because it's not very scary), maybe you should add something to mildly cross the screen from time to time or make the battery's energy limited, so we'd have to turn it off from time to time.
Then, in the house, it gets 100% better, the sudden change of the view is perfect and... no spoilers for the others.
I played through the game twice and I think it's good and the absurd combination just adds the chery on top. Well done.