I've had Jewel of Atlantis for ages. I don't believe it's possible get Emperor at all arcade levels. I'd be really interested to know if anyone has and if so how?
[Quest mode]
comleted all levels.
hi-score:1335851
[Arcade mode]
Blocks:all Emperor
Cells:all Emperor
Jewels:4 of 9 Emperor
Mixed:12 of 13 Emperor
hi-score:90018
I also don't believe it's possible get Emperor especially at all Jewels mode...
If you cant see the above img,please see below (right click->copy shortcut).
http://blog-imgs-38.fc2.com/j/e/w/jewelofatlantis/joa13.jpg