Fun stuff! I played some other entries with digging mechanics and yours is the most fun one so far. If you're working on a post-jam version, i'd recommend...
- The enemies are so annoying! Luring them to a corner the map was pretty fun (lol). Maybe some other way to deal with them (+ a reward) would be great?
- Some treasure variations would be cool (A map that reveals a better 'X' spot with better rewards? A crab power-up that protects you from enemies?)
- No music was kind of a bummer. Did you check on discord? There's dozens of composers looking to collab every jam. :)
Anyway, congratulations on submitting a cool entry :) Gamedev is plenty hard!