This seems cool but is also a little hard to understand in its current state. I like the kind of reverse Spelunky and the dark, almost horror, diving theme.
It needs a bit of a tutorial and a little lightening up on the controls. The ground pound to excavate seems cool but I think it'd just be more practical as a dig button, it's also fiddly. The energy and oxygen system needs better explaining. It's also possible to get soft locked dropping into a shop area and finding both sides sealed off.
This game has tons of potential and could be really cool with a little more work. I never could get that far in the time I played it but looking at the itch page there's some really great ideas and things further in, and I'd love to see them in a later build of the game.