Hey, thanks so much for playing, and for this great feedback! So glad you enjoyed the puzzles and difficulty curve. Integrating tutorials into the story/level progression without bogging things down has been one of the major challenges of development; we'll probably be re/tweaking the formula for as long as we work on the game.
Thanks also for yr note re: settings not saving. Can I ask what platform you're playing on? Some of our menu feature implementations are still a bit patchy, so we'll definitely look into getting that fixed.
bryan/[bucket drum games]