Complex sentence: The escape is successfully effected-some of the guards are bribed, and Eithriall fights and kills those who remain, and gets Khumri free in the nick of time before the Assyrian King's men were to take him.
Split into simpler sentences: The escape is successfully effected-some of the guards are bribed, and Eithriall fights and kills those who remain. Khumri is freed in the nick of time, just before the Assyrian King's men were to take him.