I love that this feels like a return to Alien in terms of psychological-spiritual horror. The Alien films have felt either mostly like action flicks (Aliens, Alien Resurrection) or grand Odyssey epics (Prometheus, Alien Covenant) which I do love mind you. But Alien (1979) had a spiritual horror that hasn't quite re-emerged, Romulus gave me those Gigerian Vibes again, especially the cryotube with blood and screams, and the facehuggers chasing down people in confined spaces.
I confess that I love each Alien film: its aesthetic, style, and interpretation of the Xenomorph. But the original Alien is my favorite, and to see hints we may get some of that former g(l)ory "brings warm feelings to my heart." (Yoda, Attack of the Clones).