GB3
I'm lost about the story elements of the game. Why are you or the character you play, seems to be playing moments from the first movie? Like why? Why must we go through some old scenes stuff, is it a training moment for when you start the game?
A direct quote from the GameInformer article:
“Shortly after you're hired, an ancient evil envelops the city, causing a massive surge in ghost activity. The Ghostbusters must get to the bottom of what's going on before the city is literally torn apart. This spirit surge not only prompts a wave of entirely new ghosts, but a few old rivals as well.”
As near as I can tell, it stirs up some older ghosts when this new thing arrives, probably as a bit of fan service. And yes, the Slimer confrontation is part of a training thing. It's the first time you use your pack.