- Ghostbusters II reference
In front of the water fountain in the firehouse is a window looking back into storage. You can see the 'Ghostbusters II' sign and some doors from Ecto 1A.

When you are in the firehouse just before returning to the closed-up Sedgewick, play through the phone messages. You will hear a woman asking for the number to Ray's Occult bookstore.

- Player ranks
The player ranks in order are as follows:

Defender of New York
Slime Acquireor
Paranormal Examiner
Phantom Blaster
Spirit Trapper
Specter Slayer
Supernatural Investigator
Ghostbuster
Novice Ghostbuster
Greenhorn
Slimer Snagger
Spook Spotter
Proton Slinger
Elite Ghostbuster
Rookie
Ecto Exterminator
Wraith Wrangler
Soul Hunter
Intern Ghostbuster
Ghostbuster of the Year

- Spider Witch preview
When hunting Slimer, you will find room 1221, the Spider Witch's room. Looking through the Paragoogles at the lower left decoration will reveal a glowing spider.

- NES Ghostbusters reference
Look at one of the monitors on a desk upstairs at the Ghostbusters' headquarters. You can see the ending screen from Ghostbusters on the NES.

- Trophies
Successfully complete one of the following tasks to get a trophy:

Bronze Trophies
You Never Studied	Keep your ears open to learn everything you can about the Civil War.
Mother Pus Bucket!	Purchase all upgrades for the Slime Gun.
One down, on the Ground!	Airborne coffins are an affront to gravity; use your Proton Pack to avenge Mother Nature!
Heat 'Em Up	Purchase all upgrades for the Proton Gun.
We be fast! They be slow!	Purchase all upgrades for the Dark Matter Generator.
Hedgebuster	The hedge maze is a real eyesore; do some Protonic pruning.
No Job Too Big	Overcomeed all Most Wanted Ghosts
Kosher!	Remedy a dubious food choice to make the bar mitzvah as orthodox as it can be.
I Love You When You Rough-House!	The tidy architectural office could use some Proton-based humbling.
On the Payroll	Successfully complete one multiplayer campaign.
Employee of the Month	Be top earner in each multiplayer job type.
Slime Dunk!	Trap a ghost using the Slime Tether.
You Gotta Try This Pole!	Slide down the fire pole.
Payday!	Be the overall top earner in each multiplayer campaign setting.
Nice Shootin', Tex!	Finish the game with less than $100,000 in property damage.
I Looked at the Trap, Ray!	Recover 20 of your own full ghost traps.
I'm a Ghostbuster, Not a Doctor!	Revive your teammates 20 times.
Total Protonic Reversal	Knock yourself down with your own weapon.
Aim for the Flat Top!	Eliminate a creature.
Wanted!	Overcome three Most Wanted Ghosts.
...And You Want to Keep It?	Acquire a Cursed Artifact.
Ghostbusters Drinking Game	Quench your thirst wherever possible to avoid being scared spitless.
I'm Picking Up A Signal...	Acquire a 100% PKE scan on a paranormal creature.
We Came, We Saw...	Finish the game on 'Casual' or 'Experienced' difficulty.
Egon's Guinea Pig	Use one of every Pickup (both Power-ups and Equipment).
It's a Living	Trap over 50 ghosts in your multiplayer Ghostbusting career.
Overachiever	Get over $2,500,000 in multiplayer, over 30 Post-Job Awards, 50 Jobs completed.
Loans Paid Off	More than $100,000 earned in multiplayer.
Stasis Dunk!	Trap a ghost using the Stasis Stream.
I Feel So Funky	Get slimed by a charging ghost.
I Don't Want My Face Burned Off	Purchase all upgrades for the Meson Collider.
I Ain't 'Fraid of No Ghost!	Trap a ghost.
Gozer's Most Wanted	Successfully complete each Multiplayer job in every location.
But the Kids Love Us!	The children's reading room has a story to tell, but it will take more than your eyes to see it.
I've Quit Better Jobs Than This.	Some ghosts had a real blowout in the Coat Room. Clean it up?
It's Slime Time	Use the Slime Tether on 15 ghosts.
Slam Dunk!	Slam dunk a ghost into a trap.
The Destructor	Finish the game with more than $3,000,000 in property damage.
Gold Trophies
Back Off Man. I'm A Scientist	Acquire 100% PKE scans for every paranormal creature.
Spores, Molds, and Fungus	Acquire all Cursed Artifacts.
Are You A God?	Finish the game on 'Professional' difficulty.
We Have the Tools!	Purchase all available equipment upgrades.
Platinum Trophies
Platinum Trophy	Awarded for outstanding performance in Ghostbusters!

Bronze Trophies
Let Me Guess, Gozer Worshippers	Finish the 'Lost Island Rising' level.
The Flowers Are Still Standing!	Finish the 'Welcome to the Hotel Sedgewick' level.
Somebody Saw a Cockroach on 12	Finish the 'Return to the Sedgewick' level.
We Have the Talent!	Finish the 'Firehouse' training level.
Once S'more into the Breach	Finish the 'Panic in Times Square' level.
Get Her!	Finish the 'Checking Out the Library' level.
Ghost Fever Grips New York	Finish the 'Museum of (Super)Natural History' level.
Disaster of Biblical Proportions	Finish the 'Central Park Cemetery' level.

- Watchmen reference
When listening to the answering machine messages, one will be of a man talking in a gruff voice asking, 'Who busts the Ghostbusters?'

- Easy 'Nice Shootin', Tex!' trophy
Use the following trick to get the 'Nice Shootin', Tex!' trophy without having going through Story mode a second time. A memory card and hard drive are required. Have a completed saved game file on your hard drive. Begin a new game on your memory card. Play past the training mission, and save the game as soon as you begin the hotel mission. Then, quit the game. Load the saved game file from the hard drive, and go to the final Boss. Go into the 'Options' menu. Go to the 'Game Play' setting, and change the 'Memory' setting to the memory card. Overcome the Boss to get the trophy.

- Most Wanted ghost locations
Successfully complete the indicated tasks in the following locations:


Library (Reading Room, Basement Stacks, Twisted Stacks)

Olga The Terrible	Capture the Captain Of The Guard, and successfully complete five jobs in the Library.
Captain Of The Guard	Capture The Book Of Pain, and kill twenty paper enemies.
The Book Of Pain	Successfully complete any job in any of the Library levels.
Dredge	Capture Olga The Terrible, and successfully complete ten Library thief jobs.

Times Square (Streets, Office, Rooftops)

Grimgreave	Capture Dolnasky, and kill twenty gargoyles and/or cherubs using slams.
Dolnasky	Capture Smelly Ned, and collect fifty power-ups.
Smelly Ned	Successfully complete five containments in the Times Square maps.
Binky	Capture Grimgreave, and successfully complete ten survivals on the Times Square maps.

Museum (Rotunda, Mayan, Egypt)

The Maestro	Capture Sharpshooter Bailey, and successfully complete ten Museum survival jobs.
Sharpshooter Bailey	Capture Grundel, and capture fifteen civil war ghosts.
Grundel	Successfully complete five Museum protections.
Grand Pappy Sargassi	Capture The Maestro and successfully complete fifteen jobs on the Museum levels.

Cemetery (Graveyard, Altar, Lost Temple)

The Clawed Menace	Capture The Darkest, and kill fifty Cemetery crawlers (spider like tombstone creatures).
The Darkest	Capture Mad Mad Minimo, and kill fifteen Black Slime monsters.
Mad Mad Minimo	Gain $50,000 in any Cemetery job. Must be in a single match (survival recommended).
The Uprising	Capture The Clawed Menace, and successfully complete ten survival jobs in the Cemetery.

Any level except for Slime Dunk

Polar Slimer	Capture Wee Slimer, and achieve twenty Slime Dunks on each of the Slime Dunk maps.
Wee Slimer	Capture Rotten Slimer, and win at least three Slime Dunks.
Rotten Slimer	Capture 10 Slimers.
Glutton Slimer	Capture Polar Slimer, and successfully complete 60 jobs.

- Madame de Pompadour reference
The portrait of Ivo Shandor's mother on Shandor Island is modeled after Francois Boucher's 1750s portrait of Madame de Pompadour, courtesan to Louis the XV of France. Though a political and historically significant figure, she was essentially a prostitute.

- The Real Ghostbusters reference
In the basement, on the far work station there is a PKE meter modeled after the one from The Real Ghostbusters.

- Fan fiction reference
Go upstairs at Ghostbusters headquarters. You can find a drawing by a child on pink paper hanging near some electrical equipment. The text 'To Uncle Egon, from Ed.' appears on it. This is a reference to the fan fiction Ghostbusters videos 'Freddy vs. Ghostbusters' and 'The Return Of The Ghostbusters' which features Egon's nephew Ed Spengler.

- O.J. Simpson reference
One of the messages from the Vigo painting is a reference to the O.J. Simpson trial. It reads, 'I see the evil in the times to come. The glove won't fit.'

- Player awards
Successfully complete the indicated task to unlock the corresponding award:

Comeback Kid	Trap three ghosts in 'Sudden Death'.
My Ghosts My Trap	Most ghosts trapped in your own trap.
Broke	Least cash earned in the match.
Smashy Smashy	First player to destroy 10 Evil Relics.
Slime Magnet	Most times slimed.
Rollin In Dough	Most cash earned in the match.
Destruction Master	Most Evil Relics destroyed.
Slimer Wrangler	Longest amount of time wrangling Slimer.
Duckin and Dodgin	Most dodges and jumps.
Demolitions Man	Most ghosts damaged in a single explosion.
Soul Survivor	Longest run without getting knocked out.
True Protector	Trap three ghosts sequentially while the active PKE Disruptor remains undamaged.
Slimer Dodger	Least number of times knocked down by Slimer.
Most Revived	Most times revived by a teammate.
Ain't Afraid Of No Ghost	Least amount of knockouts.
First Death	First knockout of the round.
Nice Shootin Tex	Highest accuracy with the Proton beam (including the Boson Dart).
Long Time Wrangler	Longest ghost wrangle.
Tech Head	Most power-ups collected in the match.
Ghosticle	Most ghosts frozen with the Stasis Beam.
Befriender	Most ghosts turned into good guys with Pink Slime.
Slowpoke	Shortest total distance traveled in the match.
MVP	Most points in Slime Dunk.
Darkest Matter	Most ghosts hit with the Shock Blast (including the Stasis beam).
Rampager	Shortest period of time between destroying two Evil Relics.
Dead Aim	Most ghosts hit with the Meson Collider (including alternate fire).
Blink Out	Most ghosts eliminated by destroying Evil Relics.
Team Savior	Revived each teammate at least once.
Commando	Highest ghost defeat to player knockout ratio.
Best Rescuer	Most Artifacts returned to the safe zone.
Light Show	Lowest accuracy with the Proton beam (including the Boson Dart).
The Real Ghostbuster	Most ghosts trapped or destroyed.
Marathon Runner	Longest total distance traveled in the match.
Slimer	Most shots with the Slime Blower (including the Slime Tether).
Purist	Fewest power-ups collected in the match.
Gloop Dreams	First person to perform 5 Slime Dunks in the match.
First Rescuer	First player to destroy an Artifact thief.
Keeping An Eye Out	Longest period of time in PKE goggle view.
We Came We Saw	First person to trap 10 ghosts.
Red Handed	The player who destroys the most Artifact thieves.
Slammer	Most wrangled ghost slams.
Medic	Most revivals of teammates.
Itchy Trigger Finger	First Person to shoot in the round.
Vendetta	Be the first to destroy or capture a ghost after it has damaged a PKE Disruptor.

- The Extreme Ghostbusters reference
When you are in the firehouse, go down by the containment unit. Look on one of the work desks to see a circular ghost trap that was used in the late 1990's cartoon called The Extreme Ghostbusters.

- Indiana Jones reference
One of the messages on the answering machine is from a Professor Jones who is trying to locate the Vigo painting, stating that it belongs in a museum.

- Rookie's real name
Check your messages when you get back from the 'Stay Puft Marshmallow' level. The new person's father or friend says 'You're doing adequate work out there Luke, keep it up!'. This reveals that his name is Luke Hoss.

- Ghostbusters reference
When you are in the hotel ballroom with Slimer, press [Action] by the piano to sometimes hear the same notes that Peter played in Dana's apartment in the first movie.


In the 'Sedgewick Hotel' level, you will pass room 1204 while hunting for Slimer. Inside you can hear the original Ghostbusters commercial for the movie. This is also a reference to Dana Barrett, who had a habit of leaving her television turned on too loud.

- Spanish headlines
In the firehouse after the 'Shador Island' level, there are Spanish newspapers scattered all over. The headline reads 'Un Cubano En El Cosmos', which means 'A Cuban in Space'.