Cursed Artifact #6/6: When you come a room with a bunch of chairs stuck to the ceiling, get out your PKE meter and scan around. The artifact is a chair stuck to the ceiling.
Ghost Scan #9/10 (Cultist): After using the Slime Tether on the revolving wall, you’ll come to a slim hallway. After you’re separated from Ray, the Cultist will appear. It’s a flying, sorcerer-like ghost that has a single projectile attack. Scan it! The Cultist doesn’t appear anywhere else in the level.
Cursed Artifact #5/6: Shortly after entering the ghost world, you’ll come to a room with many portals. After defeating the Book Golem that appears, go through the portal in the back left corner of the room. It leads to a small platform containing the artifact. When you’re ready to proceed to the next area, go through the portal in the back right corner of the room.
Library Ghost Strategy: Immediately concentrate all of your fire on the books floating around the Librarian emitting green light. Those books power the Librarian’s shield, and so must be eliminated before the Librarian can be harmed.
Use a combination of blaster fire and Boson Darts on the books. Keep moving, as Book Bats will be constantly attacking you. Stay focused on destroying the books.
When the books are destroyed, you can attack the Librarian directly. She will teleport around the room. Keep your distance from her, as you blast her with Boson Darts. She has one powerful scream attack that will easily hit you if you’re too close.
When her energy is low, wrangle her in like you would any other ghost.
Ghost Scan #8/10 (Coal Golem): You’ll come to a furnace room, where the Library Ghost will make yet another short appearance before vanishing. The Coal Golem will appear and attack. Scan it!
Cursed Artifact #4/6: You’ll come to a room with a three beams blocking the exit. Before you use the capture stream to pull the beams off archway, go to the back left side of the room. The artifact is a chair leaning against the wall.