Ghostbusters: The Video Game walkthrough - Tutorial
Drinking Fountain #1/8: In order to unlock the “Ghostbusters Drinking Game” achievement, you’ll need to drink from every drinking fountain in the game. There are 8 in total. The first one is at Ghostbusters HQ, and can be activated during the tutorial level. The fountain is to the left of the secretary’s desk on the ground floor, right at the top of the stairs leading down to the basement.