I liked the game a lot. The story was well written and I thought the themes were presented well. I also liked the digging mechanic. It reminded me of the Pokemon digging mechanic from the Sinnoh games. The gameplay was very focused and simple in a good way.
As for some small feedback for improvements, some of the text was a bit difficult for me to read due to the font (maybe that's just me, though) and a restart button at the end would be a nice QOL improvement so the user doesn't need to reload the page to play again. But those were really small issues, I enjoyed the game overall!