I've been playing for a while and managed to reach depth 10! Hopefully, next time I'll get the amulet.
The concept seems very original to me. The use of mathematical operations, although simple, makes you hesitate and think twice before moving in a direction. The algorithm for the dungeon design seems very accurate; the use of long corridors fits great with the theme and gameplay.
If I have to point out what I liked the least, it's perhaps the selection of the square font, as it was a bit difficult to read all the information on the screen at the beginning. I would also have put the help text in a separate popup window, as you don't need to have all that text visible all the time.
But as you can see, these are minor details. The concept and idea seem original and well-developed. It felt like a different kind of roguelike, where it doesn't matter what number you are (how powerful you are) because there are always situations that revert you to low numbers, and you end up being devoured. I've enjoyed playing a lot and personally value when people can convey new original ideas in such a short time. Congratulations on your work.