Such a fun and addictive concept for a game that has a lot of constraints, I played it till the end, and it scratched a particular part of my brain that really enjoys grinding but loves compounding benefits aswell.
I would say that scaling the enemies would take this to a new level, as it stands you can always fight them till you are around 3 health and repeat, scaling would make the players more cogniscant of their health.
Also, just a QoL idea, when buying from Merchants, or doing Adventures, having a button that takes you directly to the page rather than leaving and coming back would help with the continuity a lot.
Very fun and enjoyable experience overall
-Dhaval