Lovely work - layering elegant visual effects onto grimy 90s jank is just the right sort of uncanny for the story. The pacing is tight, letting the narrative be both thoughtful and visceral. Clever puzzles that don't repeat themselves, and the "shooter" elements of the FPS are deployed to heart-pounding effect.
While the slipperiness of the textures and lighting is perfect for the "come on, where is it" of horror-puzzles, it's possible to get stuck while you run around in circles trying to find that one key feature you remember seeing somewhere in the dark haze. Treat with caution if you have any issues processing noisy, confusing visuals - for me, it made the playthrough take rather longer than anticipated from the description. Even so, well worth the time.