Complex sentence: Finally, after a brutal beating at Ares' hands, Diana finally outwits and kills him; subsequently, Ares is condemned to the underworld to attend Hades as a slave, alongside his son.
Split into simpler sentences: Finally, after a brutal beating at Ares's hands, Diana finally outwits and kills him. Subsequently, Ares is condemned to the underworld to attend Hades as a slave, alongside his son.