Complex sentence: He quickly became known city-wide as "The only hope of the city" and was nicknamed the "Angel of Hope Street" after his first mission where he saved the Hope Street Police Station from being overrun by Burners.
Split into simpler sentences: He quickly became known city-wide as "The only hope of the city". He was nicknamed the "Angel of Hope Street" after his first mission where he saved the Hope Street Police Station from being overrun by Burners.