'Phoenix' by Amstar Electronics was a fixed shooter with impressive enemy animations, different enemies for each level, and culminating in a very early example of a boss fight, where you have to shoot your way through the outer shell of a big mothership.
Scores - MAME:
11890 ........... on 2020-11-18
1720 ........... on 2016-01-16
Got the score 1720 in MAME.
The Musée Mécanique had a Phoenix machine, so I played a game and reached the floating enemy base level.
Got the score 11890 in MAME.
This game is fun and the boss fight is intense!