Hi this is great!
Are you open to feedback? The mega drive ALSO had a port of this.
But the neat thing about that one is that it made some interesting QOL improvements. They added a couple of extra bosses to the game, basically moving one or two of them around, to make the game a little less monotonous. Since fighting the gargoyle again and again got monotonous. But the Mega lacked a lot of colors and missed some backgrounds.
So this is promising because it looks MORE like the arcade!
Any chance thought of adding that additional content? The factory level, for instance, has a new cool spider boss right after fighting the second gargoyle. Check it out if you are not familiar.
7:06 timestamp https://www.youtube.com/watch?v=mcdRVNqjS1k