You have my sympathy and support. With Germanys opinion I believe there are a thousand countrymen more fitting to such a task than I, but from my point of view it was obvious even while I tried everything to keep foreign politics away from me during this year. Because I had critical other issues to bother with, and my mind just as easily wraps around scandals and debates as most others.
When I first heard of Trump I couldn't believe how much of an airbag he was, not even capable to stand to his own words, never mention realizing when contradicting himself. I was shown, by a friend from Netherlands, even some examples where a diplomat or the moderator had played him out against himself with incredible ease. That was less than a year ago, and I gave it little further thought.

From what little I have heard since, it was my understanding that a lot of Americans lower class and even middle class (if these are the appropriate words, it's how we call our layers of people ;) ) felt ignored by politics so far and that is why so many of them cling to his words as they do. Assuming Americas politics were indeed off in this regard, a little rough shaking would do well in my opinion. However, yes indeed it's pretty much the same that happened around 1925, when exactly the same people fell for exactly the same words of almost exactly the same kind of guy. Let it be said: I'm a rather fatalistic fellow in regards to politics. I even see the need or use in war and anarchy, but I'm not blind to its disastrous consequences. And by all means, that is NOT what America needs right now. And the rough shaking I expect from Trump could very well cause one or two cave ins. Not only within America.

I want to stress again that I am badly educated in this entire regard. The only hope I see is that from what little I've seen Trump is not out for war and he doesn't want to create the superior human race. He is full of himself. In a way that reminds me more of an Egyptian pharaoh, might have been Amenhotep if I'm correct, who was, in a sense, too full of himself - though for far more generous reasons. The thing back then was that everything immediately around him had improved during his reign, while everything else fell into chaos and ruin. And by the end of his 'period', the people rebuild their land and country on their own, under a new pharaoh who was raised and educated through the short comings of Amenhotep.

In my very own point of view, America will see a very harsh and difficult time. This time will likely do a lot of harm, but it will not destroy. And the lessons learned during this time will only strengthen the land afterward. And, thereby, the people and their politics. For now I could only wish everyone over there all the strength they can muster, and a lot of luck.

So I've checked the uptodate newspaper about the situation. I would have to rephrase a few things I've said, like the Trump I've seen half a year ago didn't want war. Well, I still say he doesn't want a war, but what's worse: He became a man who BELIEVES he could challenge everything and anything.

Second this Germany newspaper puts into better words what I think will count a lot in the near future: There is a lot in his way he'd need to overcome just to build that freakin wall. All in all it looks like brexit, the people wanted to prove to themselves they have a voice, they have a choice. And in your case, the people went to vote the one thing that is anything but the stuff they didn't want. The people gave a dang about what it is they voted for, as long as they could vote without voting for the stuff they didn't want to have anymore.
I'm halfway sure that would change pretty soon, and a lot of people will regret what they did. It's this "I vote trump because he can't win anyway" now: "Yay, trump became president!" in a week "fuck... he became president".

Most importantly, you asked what Germany thinks of him. That's why I actually looked into the newspaper, and here's your answer.
Mussolini. Hasardeur. Hitler. Every hellspawn Europe endured, Trump is the next incarnation. And we call his win "The End of the American Century".

Sad news indeed. I still think America will not perish. Your values and dreams will be reborn, not reformed. Every rebirth needs some sort of death first, though. He and his reign will be very much alike to those here in Europe before him. He'll rage for a few years and be cursed and hated for several generations.
It may be a small comfort I offer, but it is one I can guarantee. He won't last. But America will.