Great all-around package! The first area is very well decorated (though I can guess you were more rushed for the second one). The shelves and other furnishings really do make a difference, compared to an empty maze.
Speaking to the Offerings is very creepy, well done there. I also love Pathways Into Darkness. :)
Movement is a bit slow but I didn’t mind that as much, as it feels suitable for underwater.
Some cabinets being decorative and others containing necessary items is potentially unintuitive; it wasn’t really a problem, but I found the unopenable ones first and then almost didn’t bother clicking the others.
Combat is trivial in any place where you can move side to side, and it would do well to have some visual feedback when you damaged something, even if it’s only a flash or blink.