| Achievement | How to unlock
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| ...And You Want to Keep It? (20 points) | Collect a Cursed Artifact.
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| Aim for the Flat Top! (10 points) | Eliminate a creature.
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| Are You A God? (150 points) | Complete the game on 'Professional' difficulty.
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| Back Off Man. I'm A Scientist (40 points) | Obtain 100% PKE scans for every paranormal creature.
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| But the Kids Love Us! (20 points) | The children's reading room has a story to tell, but it will take more than your eyes to see it.
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| Disaster of Biblical Proportions (20 points) | Complete the 'Central Park Cemetery' level.
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| Get Her! (20 points) | Complete the 'Checking Out the Library' level.
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| Ghost Fever Grips New York (20 points) | Complete the 'Museum of (Super)Natural History' level.
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| Ghostbusters Drinking Game (40 points) | Quench your thirst wherever possible to avoid being scared spitless.
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| Heat 'Em Up (30 points) | Purchase all upgrades for the Proton Gun.
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| Hedgebuster (10 points) | The hedge maze is a real eyesore; do some Protonic pruning.
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| I Ain't 'Fraid of No Ghost! (10 points) | Trap a ghost.
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| I Don't Want My Face Burned Off (30 points) | Purchase all upgrades for the Meson Collider.
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| I Feel So Funky (5 points) | Get slimed by a charging ghost.
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| I Looked at the Trap, Ray! (20 points) | Recover 20 of your own full ghost traps.
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| I Love You When You Rough-House! (10 points) | The tidy architectural office could use some Proton-based humbling.
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| I'm Picking Up A Signal... (20 points) | Obtain a 100% PKE scan on a paranormal creature.
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| I'm a Ghostbuster, Not a Doctor! (20 points) | Revive your teammates 20 times.
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| I've Quit Better Jobs Than This. (20 points) | Some ghosts had a real blowout in the Coat Room. Clean it up?
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| It's Slime Time (20 points) | Use the Slime Tether on 15 ghosts.
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| Kosher! (10 points) | Remedy a dubious food choice to make the bar mitzvah as orthodox as it can be.
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| Let Me Guess, Gozer Worshippers (20 points) | Complete the 'Lost Island Rising' level.
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| Mother Pus Bucket! (30 points) | Purchase all upgrades for the Slime Gun.
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| Nice Shootin', Tex! (40 points) | Complete the game with less than $100,000 in property damage.
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| Once S'more into the Breach (20 points) | Complete the 'Panic in Times Square' level.
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| One down, on the Ground! (20 points) | Airborne coffins are an affront to gravity; use your Proton Pack to avenge Mother Nature!
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| Slam Dunk! (15 points) | Slam dunk a ghost into a trap
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| Slime Dunk! (15 points) | Trap a ghost using the Slime Tether.
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| Somebody Saw A Cockroach on 12 (20 points) | Complete the 'Return to the Sedgewick' level.
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| Spores, Molds, and Fungus (40 points) | Collect all Cursed Artifacts.
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| Stasis Dunk! (15 points) | Trap a ghost using the Stasis Stream.
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| The Destructor (40 points) | Complete the game with more than $3,000,000 in property damage.
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| The Flowers Are Still Standing! (20 points) | Complete the 'Welcome to the Hotel Sedgewick' level.
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| Total Protonic Reversal (5 points) | Knock yourself down with your own weapon.
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| We Came, We Saw... (50 points) | Complete the game on 'Casual' or 'Experienced' difficulty.
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| We Have the Talent! (20 points) | Complete the Firehouse training level.
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| We Have the Tools! (40 points) | Purchase all available equipment upgrades.
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| We be fast! They be slow! (30 points) | Purchase all upgrades for the Dark Matter Generator.
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| You Gotta Try This Pole! (5 points) | Slide down the fire pole.
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| You Never Studied (10 points) | Keep your ears open to learn everything you can about the Civil War.
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