Ivory Secret Mission 
Kill all enemies.
For this mission, you’ll want to focus on the witch first. She has a very annoying habit of shielding the Rages and tossing multiple knives at you. Getting her out of the way first allows you to not have to worry about her daggers and then focus on the two rages. Which Rage you go after first once the Witch is down is up to you, but I found taking out the Demon Rage from the air was easiest, leaving just the Angelic Rage by its lonesome to finish off.