This is a mid-length story, kind of between a creepypasta and fable in tone, presented as a completely linear story with a single link on each Twine page.
It has a few typos: wading instead of fading, for instance.
So the interactivity, polish, and replay value are low here.
But I liked the descriptions. Not everyone will like this story, but I have a very specific niche that I like, which is games/stories where you are transported to a dark shadow world and must conquer it with the power of light. (Eidolon, Kingdom Hearts, Zelda: A Link to the Past, Twilight Princess).
This seems like it's drawn from some game design, though. It mentions stuff like 'a ladder 30' above you', 'a 10' monster', 'a 10' globe of light'. The character (in this completely static story) collects globes of light to upgrade their weapon.
So, it's interesting, and weird, but I enjoyed the story.