Never liked this game; it lacked atmosphere and the puzzles and mapping were illogical. (In retrospect, it may have been better to treat it as a puzzle). I'm pretty sure the game would have been unsolvable without reasonable knowledge of the Hulk character, though as I was pretty lazy I never really tried.
One problem was that I bought Americana's tape reissue. Although a graphics version was available, Americana chose the 16K text-only version for their release. (Maybe the graphics version was disk-only?). Even so, I've played 16K adventures that had bags more atmosphere than this (Brian Howarth's Waxworks for one- ironically, he did this conversion of Hulk).