10g- Its in there
You successfully captured Slimer
Watch the video closely when they are playing with the slime tether and you will see the 1st known cheevo.
http://www.giantbomb.com/ghostbusters-shaky-cam-interview/17-416/
Yeah, i just watched it, its:
15g- Slime Dunk!
10g Ive always wanted to do this.
Destroy all the tables in the ballroom
You guys forgot the most important one:
10g I feel so Funky - Get slimed
I also thought of:
5g - Does this pole still work? - Slide down the fire pole (## of times?)
10g - Are you sure you’re using that thing correctly? - Cross the streams in multiplayer (## of times)
15G - Are you a god? - Complete a level without taking any damage
5g - Print is dead - Use your proton stream to blow ## books off of the book shelves in the library level.
25g - Millions of registered voters - Complete the game on normal difficulty
5g - I’ll believe anything you say - Join the ghostbusters as the new recruit
10g - I’ve quit better jobs than this. - Get slimed ## times
10g - Bit of a sissy, isn’t he? - Complete all conversations with Vigo painting.
50g - What a ride. - Complete the game on Hard difficulty.
I LOVE the Conglaturation! one!! That’s hilarious!!! I wish they’d really put that one in there. I would wet myself if that popped up when i complete the game.
drink out of the water fountain on each level for an achievement…i heard that from a source, i dont know if he was bullsh*ting me or not but he seemed serious…the achievement didnt seem ghostbuster-ish but thats what i was told…
That doesn’t sound right… Unless the name of the achievement is a play on words from a line in one of the movies.
25g: the table broke the fall
shatter every chandelier in the ballroom
25g: somebody blows their nose and you want to keep it?
collect all items in the game
I got one right 
Looks like your source was right!
*Ghostbusters Drinking Game - Silver/40 pts.
Quench your thirst wherever possible to avoid being scared spitless.*
Thanks for the link, Mikey!
15g - And the flowers are still standing! (destroy all tables in the ballroom)