For me, it has been smooth sailing so far. However, as my above post implies, I just reached "Lockstep" and I can see this one taking a lot of practice. Otherwise, I have been able to pass every stage on the first or second try. I can usually get the superb rating after a few tries, and I have been able to perfect almost everything it has asked me to. This game is far better than I expected. It is also far easier than I expected after reading reports of people getting stuck. I can't imagine ever needing to "skip" any of them.