Thanks so much for playing all the way through and for the detailed notes! An update is live now:
1. There's a volume slider next to the Sound button, and late-game sounds no longer pile up into a roar.
2. Mid-game: there's an Auto-buy button right on the results card, and from Silver onward a red Target ore shows up. It only breaks on dead-center hits and pays ×10, so just circling around now leaves the best coins on the table.
3. Runes look like actual rune stones now, and tapping one slots it straight into a free socket.
4. That achievement now reads "Play 50 runs".
Thanks again, this feedback made the game better!