I dislike excessive violence. I still don't understand why sexuality should be more censored than violence. But one way or another, I don't like when either are gratuitous.
To me, rape is one of the more despicable things a human being can do to another (it rates up there with theft, maiming/crippling/torture, and a number of horrid things).
To some extent, I suppose they ARE trying to shock, but yes, it also is a depiction of a european soldier doing the deed. The game does take place in hell, and it is, pretty much the worst of european soldiers and mercenaries of the time (the game takes place during the thirty-year war) unleashed in hell.
Yes, the european powers are invading and settling hell, making hell the New World, instead of America...
Is that image gratuitous? I believe so. Do I agree with its use? No. Do I have a word to say about what goes in the book? No.