Nice analysis, only Germans didn't have those nasty habits of strapping bombs on themselves and sawing off the heads of noncombatants.
No, but they certainly did have a few of their own nasty habits such as mass executions in front of burial pits, concentration camps, and gas chambers.
No, Germans didn't. But Soviets did have suicidal tactics and they did mutilate their enemies (WW2 Eastern Front).