So cool! It was really fun to read through the manual and make sense of the various phases of the game
As intended, this game is HARD. It is a tight race against the clock, and a successful run requires a great deal of skill and luck.
While I was learning, I set the expert difficulty to a negative number (giving me extra days) which was nice to have. There is one part that confused me. Just before the final activation, the player should be able to spend their remaining hit points to lower the difficulty of the final roll, yet I appear unable to. Is there somewhere to click?
Also dying in the final activation does not end the game, but rather the player revives with full HP and possibly lost days. This results in an endless loop if the roll difficulty is over 13+. (edit: see response)
If this is a straight remake of the 2010 game, then my opinions aren't needed, but if not, there's a few things I could suggest for both balancing and UI.