Thanks so much for going to all this effort and letting us know about these bugs you found. It's such a complex game to code, lots of actors talking to other actors, with all sorts of different states to track across the surface and underground scenes. I spent many many hours debugging and knew I wouldnt be able to find all the issues when I played through time and again - especially since we were on a tight schedule with the jam. Its unusual to find someone happy to playtest for bugs at all so I really appreciate you taking the time to put all this together.
The highscores for each level are the dev highscores we set (having played the levels over and over). They are pretty hard to get. Many of them, I think can only be equaled.
We will look into fixing these bugs asap. Thanks again!