Thanks, this was very useful onboarding feedback. We’ve strengthened the first card to contrast symbol quantity with actual changes, and reworked the uniqueness explanation around a real deduction. The uniqueness rule now appears again during level 4 at the point it is first needed.
We’ve also added visible duplicate-line feedback, kept the clue meaning visible in the early levels, added a Rules button during play, and changed the progress label to “Cells filled.” The timer now waits until onboarding is finished.
Tutorial completion and skipping are now measured separately as well. We’ll treat your difficulty observations as onboarding feedback until we have results from full level runs.