- 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.

- 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 ranks
The player ranks in order are as follows:

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

- 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.

- 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.

- 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.

- Easy 'Nice Shootin', Tex!' achievement
Use the following trick to get the 'Nice Shootin', Tex!' achievement 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 achievement.

- 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.

- 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'.

- Achievements
Do the following things to obtain the corresponding Gamerscore points:

5 Points
Total Protonic Reversal	Knock yourself down with your own weapon.
You Gotta Try This Pole!	Slide down the fire pole.
I Feel So Funky	Get slimed by a charging ghost.
10 Points
I Love You When You Rough-House!	The tidy arcitectural office could use some Proton-based humbling.
You Never Studied	Keep your ears open to learn everything you can about the Civil War.
Wanted!	Overcome three Most Wanted Ghosts.
Employee of the Month	Be top earner in each Xbox LIVE job type.
Kosher!	Remedy a dubious food choice to make the bar mitzvah as orthodox as it can be.
No Job Too Big	Overcome all Most Wanted Ghosts.
Payday!	Be the overall top earner in each Xbox LIVE campaign setting.
Loans Paid Off	More than $100,000 earned in Xbox LIVE.
Aim for the Flat Top!	Eliminate a creature.
I Ain't 'Fraid of No Ghost!	Trap a ghost.
On the Payroll	Successfully complete one Xbox LIVE campaign.
It's a Living	Trap over 50 ghosts in your Xbox LIVE Ghostbusting career.
Hedgebuster	The hedge maze is a real eyesore; do some Protonic pruning.
15 Points
Slam Dunk!	Slam dunk a ghost into a trap.
Stasis Dunk!	Trap a ghost using the Stasis Stream.
Gozer's Most Wanted	Successfully complete each Xbox LIVE job in every location.
Slime Dunk!	Trap a ghost using the Slime Tether.
Overachiever	Get over $2,500,000 in Xbox LIVE, over 30 post-job awards, 50 jobs completed.
20 Points
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 Don't Want My Face Burned Off	Purchase all upgrades for the Meson Collider.
Mother Pus Bucket!	Purchase all upgrades for the Slime Gun.
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.
It's Slime Time	Use the Slime Tether on 15 ghosts.
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.
...And You Want to Keep It?	Acquire a Cursed Artifact.
I'm Picking Up A Signal...	Acquire a 100% PKE scan on a paranormal creature.
I've Quit Better Jobs Than This.	Some ghosts had a real blowout in the Coat Room. Clean it up?
30 Points
The Destructor	Finish the game with more than $3,000,000 in property damage.
Nice Shootin', Tex!	Finish the game with less than $100,000 in property damage.
40 Points
Spores, Molds, and Fungus	Acquire all Cursed Artifacts.
We Have the Tools!	Purchase all available equipment upgrades.
Ghostbusters Drinking Game	Quench your thirst wherever possible to avoid being scared spitless.
Back Off Man. I'm a Scientist	Acquire 100% PKE scans for every paranormal creature.
50 Points
We Came, We Saw...	Finish the game on 'Casual' or 'Experienced' difficulty.
100 Points
Are You A God?	Finish the game on 'Professional' difficulty.

20 Points
We Have the Talent!	Finish the Firehouse training level.
Somebody Saw a Cockroach on 12	Finish the 'Return to the Sedgewick' level.
The Flowers are Still Standing!	Finish the 'Welcome to the Hotel Sedgewick' level.
Once S'more into the Breach	Finish the 'Panic in Times Square' level.
Let Me Guess, Gozer Worshippers	Finish the 'Lost Island Rising' level.
Get Her!	Finish the 'Checking Out the Library' level.
Disaster of Biblical Proportions	Finish the 'Central Park Cemetery' level.

- 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.

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


Library (Reading Room, Basement Stacks, Twisted Stacks)

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

Times Square (Streets, Office, Rooftops)

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

Museum (Rotunda, Mayan, Egypt)

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

Cemetery (Graveyard, Altar, Lost Temple)

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

Any level except for Slime Dunk

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

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

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

- 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?'

- 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.

- 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.

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