I had a great time with the demo. I find it very interesting to play a mystery dungeon game without
a. diagonal attacking/movement
b. hunger/regen system
I do think it would benefit the game to have a wait input, as I can think of some scenarios where you wouldn't want to attack but still wait a turn.
I think at the end of the day, definitely learn on making the game harder, it's really the soul of MD games imo :)
Good luck with everything!