wow, this one's on my top list now, impresive work, really, very polished, my mos sincere congrats.
It took me one run to understand what was happening (but then I saw the "health change" stat at the end of a day i nmy second run, and it all made sense, so, it's my fault I think hahah. I don't know how you came up that formula you used to calculate it but I think it's a really clever one, that balances very well the game, not very forgiving, not very strict. you really got a sweet nice point.
I would ask for one thing only: when you are hovering a tile it would be nice to know "what" is that tile, maybe this is also my fault, but sometimes it was unclear to me (again, just a petition from a pleased gamer ).
the ambiance sound/music also is a very good point for me. And really I think there's not much more to say.
congrats!!
I can't post my stats because of the size of the comments, but I'm really proud of them :)