Oh man, I haven't thought about Astraline in YEARS! That game was such a Quarter Muncher! I could never get past that part in Mission Two where you had to use the Drone to Navigate the Air Ducts of the Police Complex and rescue the Monk. I wish I had thought because the track for Mission Three was funkalious.
I've only played it via MAME so I can't imagine how rad it must have been in an actual arcade.
Yeah, that part was all about timing and making sure someone (or the computer) was quick to defend the ventilation controls.