Hey, thank you for your comment, I really appreciated you dropped by to write it!
Yes, Polka's Stage is one of the hardest, depending on when you find it (it was painful to test too lol)
If you play another run you'll notice most of the events, conversations and stages order are different so as the next update is ready, you may have fun playing with another girl
We have also a discord server if you ever need some tips or curiosities about the game!