Is AfD somewhat with that vibe?
Guaranteed! But not the majority...
The radicals in the AfD are at the limits to what is constitutional allowed in Germany....when there would be a danger to destroy what was build after WWII they would be forbidden by the constitutional court, the last safeguard of our democracy.
This court acted before with the other Neo-Nazi-revolutionary party, the NPD....there is no reason it wouldn't act again if there would be a real danger.
But there is good reason to think the AfD will get less radical the more members/voters and the more influence she gets....it wouldn't be the first party which starts out as radical and got quite tame with rising success and responsibilities.
The far majority of the Germans is quite conservative and not radical/revolutionary, neither left nor right...the party has to account for that when they want to go further places!