Complex sentence: He is one of a few criminals, including Mirage, beaten to death and eaten by Bruno "Ugly" Mannheim during Intergang's continuing rise to power in Gotham City and across the world outlined in that series.
Split into simpler sentences: He is one of a few criminals, including Mirage, beaten to death and eaten by Bruno "Ugly" Mannheim. This is during Intergang's continuing rise to power in Gotham City and across the world outlined in that series.