The ability Table Hopper will come in handy if you have it! The scissors will shine right before it makes an attack.
This creature continuously blocks, and it's easiest to get off a combo after dodging it. Break the bookcases as you go - they'll get in your way. It's not far - it's right around the corner in a library. Continue deeper into the building to find it. When you do finally enter the intended opening, you'll encounter the terrifying Death Scissors emerging from a painting. Use the Grim Grip platform here to reveal a point above you, and Wire Bound up to find a Blue Orb Shard. There's an overhang, which you can get to by hopping on the wall beside you. Instead of heading straight into the opening here, continue up the stairs to the right of it, and turn around. Continue to the next Grim Grip activation point straight ahead from where you landed to continue. On the next rooftop, there are red orbs and green orbs to your right. Use the Grip Grip in the corner on the roof here to proceed. When you've defeated the enemies, you can fill up on health below behind where you landed. Be ready for a fight on the next rooftop. Before using the Grim Grip point directly to your left once you land, hop over to the other side of the roof to find more Red Orbs. When you've taken care of them, you can jump down to the terrace below to find some green orbs, or continue to the next platform the camera focuses on. Use Wire Snatch to pull them close to you, and watch out for projectiles. Getting to the next rooftop, you'll be attacked by Pyrobats.
Hold RB/RT, then B/Circle to pull yourself to them. This will cause a "Grim Grip" point to appear. Stand on the spot with flames in front of you. Now, you'll learn about Grim Grip points and Wire Bound. After meeting up with V, Nero learned that the demon infestation is linked to the demonic tree Qliphoth.