I struggled on the last 3 on Shoot-'em-up for a while. Quite a wait until the actual taps. Also, is the 'So-So' the 'tap..(wait)..tap'?. If so, I always found that part fairly easy. There isn't any I really struggle with. Even the Final Remix was quite easy for me. There is only one game I really hate and that's one of the remixes.