Spinners that require
lots of spinning are a nightmare for me. Short ones aren't that bad for me, though.
Situations where a note in a combo is in a different place than the ones before and after it, which makes me miss until I learn that pattern. It's frustrating sometimes.
Streams are kind of fun for me, even really long ones. It's kind of a rush and I tend to get 300/100 for most of the notes.
Maybe I'm kind of a freak, but I've only been playing since yesterday and I can usually get a B or C on 3-star or 4-star maps. I haven't gotten an A or S on any of them, though. I'll have to keep trying for that to happen.
I haven't played taiko or CTB yet, so I don't know what my weakness would be with those.