Enter the door at the side of the Divinity Statue. Kill the enemies there if you need Red Orbs or head for the door at the top of the stairs. Defeat the demons in the next room and enter the red door at the top that'll be unsealed. Turn on the damage wheel in the room, jump upon the big ball and slash it open.
A secret area will be revealed, take the Golden Sun item there and examine the golden door on right to initiate a Secret Mission "Guiding Light". There are several crystal puzzles for this mission which show up randomly. After getting the Blue Orb Fragment as your reward, follow your way back to the Devilsprout lift. This time take the door on the other side of the lift. Instead of going up, head down and enter the crack in the wall. Turn on both the damage wheels there, two balls will drop down. You have to clash the balls with each other. To do it, first hit the left ball towards right and vice versa. After they're broken a small door will be unlocked in the area. Take the Onyx Moonshard from there, battle the Fallens and make your way back to the lift. Use the two items you have gained on the door in front of the lift.
Enter it after it's unlocked. Kill the demons in the chamber if you want or jump up the hole in the roof (above the rocks bearing Enigmas). Take the stairs on left and enter the big door there. Run down the broken stairs in the next room but be careful not to fall down in the place you got Onyx Moonshard in. Take the big red door at the other side of the broken staircase. Kill the demons in the Giantwalker Chamber if you want or head towards the door at the bottom of the other end. There's a Vital Star S on the floor. Use the Divinity Statue in the next room if you need to or enter the other door. Prepare to fight the only human in the game in Divine Library.
As the only human in the game she doesn't rely much on her power rather her speed and agility is her weapon. Given below are her attacks:
1)Shoot missile at you. You need to keep moving/rolling/jumping whatever you want but not in the direction of the missiles.
2)Shoot bullets at you. These bullets only hits you when you are moving directly towards her. You can deflect them with Ebony & Ivory.
3)Throw grenades at a place. Just run away from the grenades.
4)Shoot mini-missiles from her rocket launcher by first stomping it on ground. Attack her when she's doing this with some lightning move like Stinger to get both advantages of stopping and damaging her at the same time.
You have to be extra quick in this fight. She flies here and there using her rocket launcher. Try to get near her and do some melee combos as she is exactly opposite of Vergil because of her choice of guns. After a melee combo, if you have performed a powerful move like Stinger, she'll be thrown away, but she'll not go silently. She shoots bullets at you even then, so jump to evade or shoot them with Ebony & Ivory. Do it a couple of times and she'll give you her rocket launcher Kalina Ann when the fight's over. After you're out of the library, jump upon the red circular pod and keep flying until you reach the brown door at the top. Right before you end the mission by stepping through the brown door, go over to the left of the door and jump onto the furthest little ledge. Jump again, make sure not to fall, and you'll receive a hidden Red Orb cache.
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