There is an interesting thread atm on pinside.com on exactly the same question. It seems that nobody knows the rules (or they don't exist)

After having extensive game time on the ACDC Premium.

The band/theme means nothing to me, as does the so called "rockin" sound (I could just buy a jukebox for the same experience). Gameplay always takes priority for me (strangely enough) and it just seems to be "not quite there" in terms of that. There is nothing really innovative in terms of interactive toys that affect gameplay that hasn't been seen before and it is almost as if there was a pre-existing generic design on file at Stern that they dug out and then decided to throw a bell on it to make it theme specific.