I completely agree. Once I get into the meat and potatoes, I have to restart. I've even started keeping tons of notes and I haven't been able to beat it at all, even if I get almost everything right. I've tried over 10 times at this point and I'm sure the closest I got was 90% judging by the size of the completion bar. This may be a skill or luck issue on my part, but I think there should be a slight nerf to make things easier, but not too easy.