I dug it.
Alien is my favorite horror movie and deff on my top 5 all time list. Aliens is one of the best sequels ever made. 3 and 4 I don't hate and need to rewatch as it's been several years. Covenant and Prometheus were awful as part of the Alien franchise (imo) and probably just mid scifi movies if removed from it (again, imo). I feel like they actually took Alien out of cosmic horror and made it less scary and dulled a lot of the mystery.
Romulus was deff a throw back to the og. There was a lot of call-back and fan service, some of which worked, some not so much. But at the end of the day, it felt like I was back in the Alien universe. It was scary. It was dirty. It was dangerous- not just because the characters were stupid and caused their own deaths.