Complex sentence: During the panic, the Joker sneaks into Gotham General Hospital disguised as a nurse to meet with Dent, who rages over Dawes's death, and convince him to take revenge by anarchic means under his long-time nickname, "Two-Face".
Split into simpler sentences: During the panic, the Joker sneaks into Gotham General Hospital disguised as a nurse to meet with Dent, who rages over Dawes's death. Presenting himself as an agent of chaos, he convinces Dent to take revenge by anarchic means under his long-time nickname, "Two-Face".