The phrase "and even more shocking" is correct and usable in written English.
It can be used to emphasize an additional surprising or unexpected element in a statement or narrative.
Example: "The results of the study were alarming, and even more shocking was the fact that no one had anticipated such a drastic change."
Alternatives: "and even more surprising" or "and even more astonishing".
I still find it shocking that democracy was so openly subverted, and even more shocking that so few others seem to share my shock.
But São Paulo is one of the better-governed bits of Brazil, and even more shocking revelations are in store.
The Elizabethans also dropped their final "g"s ("runnin'," "dancin'," "movin' "), and, even more shocking to our bourgeois ears today, they dropped their "h"s.
And as billboards began popping up around Los Angeles announcing its Boxing Day release, a new and even more shocking revelation began doing the rounds of Hollywood: against all the odds, Valkyrie may actually turn out to be rather good.
The appalling atrocities of September 11th acts that must be seen as a declaration of war not just on America but on all civilised people were crueller in conception and even more shocking than what happened in Hawaii.
The company was Freelance Programmers and, mainly because of the workplace misogyny she had faced, she employed only women software specialists, and, even more shocking for the time, women working from home.
And why is watching a slip of a lad of 11 years old doing all that and worse even more shocking and depressing?
Today I, like so many others, sat horrified as I read the details of the Austin Wilkerson rape case, and the even more shocking details of his subsequent trial and sentencing.
With a strong, attractive cast and lush exteriors, Hrebejk keeps things intimate and low-key, right up until the explosive reveal and its even more shocking aftermath.
His wife has shocking hair and an even more shocking mouth.
And perhaps even more shocking: Yes, that's actually what they called it.
