We’re currently working on a minimap, so I believe it will be easier to understand after the next update!
Also, we plan to display an icon at places where you need to press the up key.
Regarding the issue of the save file getting corrupted, it would be helpful if you could tell us what you did right before it happened, as far as you can remember.
Also, if you could send us the broken file by any means, we’d really appreciate it.
We’ll consider the remaining points.
Thank you again for playing!