You made finally honor to a great game which was never ported to the Amiga ! You have pretty done a 1:1 clone of the arcade, which is amazing ! Just the music is still a bit screwed... I'd have avoided the percussions, which were not present in the original, plus at some point the music goes down by one octave. But I am sure that you will iteratively reach the perfection !
Thank you for giving the game a go! Audio wise, while not 1:1 to arcade, it is fairly near. It is a project that can be improved, in particular slightly more refined player movement and camera mechanics. While updates have not been many in recent times, it will for sure see improvement in the future, when time allows.