kazue, talking to the snail reveals you can respawn at the town, and theres something there anyways. it happened to me the first time too, exept I somehow found the secret
beat it with all upgrades and stuff, here are problems (one fun) I found
first, you can buy infinite outfits, yet they don't do anything else, and the price doesn't show.
second, if you end a drill and go directly into a mole, sometimes the mole wont dig (you can dig regularly when on it, though. that happened one time)
finally, if you win a game when on a mole, you keep digging through the air, whilst upside down, and you explode landing onto the ground. its weird, and should be tried if possible. annoyingly the mole doesn't actually live, that would have been a cool feature
hey, so you know, it seems you can use the mouse wheel to scroll back a bit if you accidentaly click too much. it may be said later part of the game I'm not at yet, just helping out