I haven't played The Horror of Salazar House myself but from what I've seen of that, I never really questioned the retro vibe and aesthetic going in on this one. You absolutely nailed it.
I liked how every information is clear--when new cultists spawn in, the different levels of door integrity, the way the lights go out when a girl is taken from that house, and made clearer with the addition of distinct sfx. These are things often overlooked but really helps making the game feel fair, fun, and polished. A nice retro, arcade minigame with a spooky undertone.