Cool 3D horror esque concept that's definitely on theme
Pros: innovative design, fits the theme well, cool main mechanic
Cons: no audio, movement felt a bit too fast for the tone, right click cooldown was a bit janky, it was impossible to turn around because the cursor would get stuck (to fix put CursorLockMode.Locked; and Cursor.visible = false; in the Awake method, camera movement follows your mouse input not the actual position of the cursor so it won't mess up anything)
Overall cool concept and not bad for your first 3D game, I'd love to see it polished.