Did Nazis have specific duties as a Nazi?

the Nazis were there to kill the Jews and others who disobeyed and or the ones not needed and to protect Hitler at all times no matter what

A Nazi is an individual soldier who was under Hitler. the Nazi Party was the whole organization.

Depends on the situation and what ''nazis'' are you referring to? Politics and propaganda aside, they would. As any other army in the world during first half of 20th century, Nazi armies would kill...

There used to be a theory that Nazis were sado-masochistic, authoritarian personalities - too many beatings in their childhood. It is an amusing idea, but completely fanciful.