| Achievement | How to unlock
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|---|
| "A" is for Apparition | Get an A ranking on a single level.
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| A Shocking Development | Complete both Wavering Hills Asylum levels.
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| All Your Ecto are Belong to Us | Earn 500,000 Ecto.
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| Apparition Apprehender | Get 1 character to level 10.
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| Back off Man, I'm a Scientist | Fully upgrade all 4 characters.
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| Bustin' Makes me Feel Good | Fully upgrade a single character.
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| Captain Quick-Thumbs | Get the 10X bonus on the trapping mini-game.
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| Ghostbuster General | Get 1 character to level 20.
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| Ghosts are Real! | Complete the Aldridge Manor level.
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| How Low Can You Go? | Complete Limbo level.
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| I Love This Town! | Earn A rankings on all levels.
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| It's a Series of Tubes | Complete both 13th St. Station levels.
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| Life's a Witch | Complete both St. Lou's Cemetery levels.
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| Listen... do you smell something? | Earn 100,000 Ecto.
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| Mass Hysteria! | Get all trophies.
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| No, You Can't Self-Synergize | Get 25 Co-Op assists in a single level.
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| Pier Pressure | Complete both Queen Charlotte levels.
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| R-r-r-remix! | Complete a single remix level.
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| Shiny New Toy | Purchase a single upgrade for any character.
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| Some Kind of Glowing Hubcap? | Collect all of Rowans ghostly devices.
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| Spirit Sweeper | Get 1 character to level 5.
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| Who You Gonna Call! | Get all 4 characters to level 20.
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| You Must Have a Big Couch | Complete a single level with 4 players.
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