Level 3: Public Library - part 2 Ghostbusters Guide
Last update: 11 May 2016
Proceed to a door with an EXIT sign. This passageway is located on the opposite side of the room, but thankfully there aren't any ghosts in the vicinity. Use the stairs and destroy a chair when you get to a new room. Enter a small room to your right and use your PKE meter to find the third artifact - Pin-up Calendar of DOOM!
You may start moving towards the next large area of the library. Approach the librarian and once again wait for her to be scared away. Obviously this will result in more ghosts appearing near your position. Use your PKE meter to scan one new type of a phantom, called Book Centurion. This ghost can be neutralized using the standard attack of your Proton Gun.
Go to the area where your colleagues are standing once you've won. Approach a bookshelf and press the action key o unlock a secret passageway. Use the stairs to get to the basement located under the library and fire at least one Boson Dart to destroy a wooden obstacle.
Proceed towards a much larger room and once you've arrived use your PKE meter to examine one of the bookstands. Sadly this will result in new ghosts appearing near your position and you should also know that you'll be dealing with large groups, including Book Bats, Paper Constructs, Book Centurions and Crusters. Leave the Cruster for later, because it's the only spirit from this group that you'll have to trap.
You may proceed to the area where you've seen the ghost of the librarian. There's a dark passageway nearby and you'll have to use it to get to the next section. Once you're inside a small room inspect the area to your right. Choose the PKE meter from your inventory and find the fourth artifact - Seat of Vapors Foul.
You'll now have to unlock a nearby passageways and this means getting rid of three metal beams. Each time you must start by using the Capture Stream of your Proton Gun. Lift the beam in the air and place it somewhere nearby. Perform these actions with all three objects and head on to a new passageway.
Head down and eventually you'll end up standing inside a partially flooded room. Go to the nearest balcony and use the power switch. Sadly this will result in a new Book Golem appearing near your position. Use the same methods as before, so you'll have to keep running near the golem while using the Dark Matter Generator.
Keep attacking the golem until it has only more health unit left. Switch weapons and use the Proton Gun to make the golem explode. You may proceed towards a new passageway. Keep heading forward until you get to a larger room. Head down and wait for your colleagues to join you.
Watch out, because soon after you've seen the ghost of the librarian you're going to be attacked by two Coal Golems. Take a quick scan of one of the golems and then attack them both. It doesn't really matter which weapon you'll be using during this fight, because they're equally effective. Each time focus on attacking a single target instead of trying to destroy both golems at the same time.
Thankfully eliminating the golems is going to be simple, as long as you use the same methods as before. Once you've won go to your left and choose the PKE meter from your inventory. Destroy a new obstacle using the Boson Dart and you'll be rewarded with a cut-scene. You'll also find out that you've unlocked a new weapon (Slime Gun) and a new ability (Slime Blower).
Use the newly unlocked weapon to get rid of black slime blocking the entrance. This will allow you to use the tunnel. Travel trough the tunnel and eventually you'll reach a larger room. Approach the librarian ghost for the last time. Watch a short cut-scene and pick up the book.
Choose the PKE meter from your inventory and scan the area to find a ghost. You'll now have to get ready to defeat the librarian in open combat. As soon as this duel has started choose the Proton Gun from your inventory and start shooting at floating bookstands.
Your objective will be to destroy all bookstands and you'll have to avoid librarian's attacks at the same time. Don't forget to revive your teammates whenever necessary. Once you've destroyed the stands you'll be allowed to focus on eliminating the librarian. All you have to do is to trap her using standard proton streams.
Once you've succeeded in getting rid of the miniboss approach a small levitating sphere and press the action key. This will result in the team being transported to an alternate dimension. Wait for a nearby gate to be raised and use the stairs. Fire your Slime Gun to neutralize black slime. This will also allow you to uncover a portal. Use it to get to a new location.