It's a very paradoxical game. It doesn't seem to have any horrible horrors. There are muffins, aka healers-macguffins, scattered everywhere. You're being chased by just a Derpy and a speedy Numget - cute and funny ponies. If they catch up with you, they'll boop you to unconsciousness for quite a long time (unless there's a horde of them cornering you). And you can boop them either to stun them for a decent amount of time. However, you can't boop ponies to disappear. They always come out of stun and keep chasing you. There are always Derpy in the maze that want to boop you to death. That realization is very frightening. Especially when you get to the last new section, miss the last muffin, and realize that you have to go back.
And it's very easy to miss a muffin and get lost here. Because the FOV here is so minuscule that an average turn of the camera is enough to lose track of where exactly you're looking. It's almost impossible to find yourself here, there are a minuscule number of orientations and a lot of mono-colored repeats. This works to create a highly concentrated sense of a dark valley. But it makes your eyes brutally, brutally sore. It's like you've been squinting them for a long time. The small window mode doesn't help at all.
I can also pick on to the lack of pause. Press Esc closes the game. Of course, horror should be frightening in everything, but this is already beyond good and evil.
Of the proposed assets I found here only Colgate's face in the HUD and numgets. But maybe it's just me being blind.
Verdict
Good
It's good, but for those who like to be scared, disturbed and be out of place.