1. Being directly responsible for the Holocaust, a program of murder that targeted Jews, Poles, Russians, communists, gays, gypsies, disabled people, political opponents and POWs
One, his name is not on the Final Solution document.
Two, that was standard operating procedure about 100 years ago.
2. Waging aggressive war against his neighbours
Oh you mean like the US of A that attempted to invade Canada right after their Independence, got involved in the Texan War of Independence and got some land that was owned bu Mexico and there is the Spanish American War ...you know the one were they sunk their own ship so they could start a war with Spain so they could get their hands on Cuba and the Philippines?
How European of him
4. Completely ruining Germany and blaming everything on the Germans in his Last Will and Testament
Unconditional Surrender come from the US President, its not as if they had much of a choice after that ... it was a war that would only end with the total defeat of the other, no middle ground unless there was some miracle weapon that could turn the tide for Germany.
You are right at him expecting anything from the Germans, what was he thinking!