Just to give you an idea of where the difficulty currently is at
This is a run where I got the 5th day with the score already finished.
By the end of the run I almost had 400.000 points while having a lot of gems still available to me.
Yes! I'm experiencing something similar. I'm working on the translations and improving accessibility to make the Steam release as good as possible. I already have a deadline in mind, and I'll definitely be tweaking the difficulty for Steam.
I'm also noticing that with the right combination, I'm getting backpacks scoring over 180k (In just one client), so I'll definitely be doing more balancing to keep things in check hehe...
Your feedback is incredibly helpful, and I really appreciate you taking the time to send all of this! Thanks for continuing to play the game!