I played through most of the first scenario of campaign 1 and Venkman had a very high XP already, 15. As I understand this carries over from scenario to scenario so this being the first game I saw myself having this guy at level 5 at the end of the second scenario. Is this normal? Levelling up so quickly?
I had Venkman shooting ghosts at close range so he would be slimed and had Stantz follow so he could get rid of the slime.
It sounds like you leaned very heavily on Venkman, perhaps at the expense of the other Ghostbusters. What was the relative XP of the other three GB's?