Complex sentence: After donning simple costumes, they present a childlike pageant of flagellation, revelation, seduction, repentance, crucifixion and salvation, and end their performance in a joyful "festival" dance.
Split into simpler sentences: After donning simple costumes, they present a childlike pageant of flagellation, revelation, seduction, repentance, crucifixion and salvation. The players end their performance in a joyful "festival" dance.