Incredible Game!
There's so many small things that come together to deliver a great uneasy and unsettling experience.
The monochromatic color palette paired with the vivid purple draws your attention to exactly where it's supposed to go, the short draw distance limiting your vision makes it feel like there's always a threat right outside of immediate visible range, the non linear level design makes it so you are constantly disoriented with only the highlighted objects to show you your next objective, and lastly the slow and exaggerated movement of the player which amplifies everything else.
A masterclass in minimal horror design, great work.