I'm thinking of starting on this one soon. Has anyone here played it? I've tried some of it. It really is quite tiring, and the speed's quite insane. Does anyone have any tips on things to watch out for or what to work on etc? Anything at all

I and my brother played it.
I don't like it much but my brother quite like it, therefore he plays better than me, also with a faster tempo.
I think you should care about the articulation and the mood, also the pedal.