Complex sentence: He was sent to fight Batman in order to cause mass fatigue before that confrontation with Bane humiliating batman in Gotham city by throwing him off a building with a broken vertebrae in public.
Split into simpler sentences: He was sent to fight Batman in order to cause mass fatigue before that confrontation with Bane. Bane's plan was carried out to humiliate Batman in Gotham city by throwing him off a building with a broken vertebrae in public.