Well so far there wasn't a place that really seriously drove me mad, but I sure do get angry there and there and sometimes it's just annoying. But each time I make an acceptable progress, the feeling that I managed to do it is pretty awesome.

I say if you get somehow time and feel like it, you should try it as well. Even ending of the first disc was quite fun on both challenges in the end and it didn't take all that much real life time.