Finished it in solo. Quick and dirty overall thoughts: it was okay, but I stand by my thoughts of it being misdirected in design and narrative in pretty much every respect. Some great ideas there, but none hit the mark or are explored as much as they probably should have been. Weakest entry in the series, so for me it goes Dead Space > Dead Space 2 > Dead Space 3. I liked Extraction a lot more than I expected, but I think it works far better as a companion piece to the original rather something to compare.
Graphics, art, and audio were all outstanding. Maxed out it looked incredible in my opinion, so much so I'd say it's one of the best looking games going around. No idea why EA didn't make a bigger deal of the PC port, and that there was talk of it being a "direct port", which tends to generate cynical impressions. The SSAO, screen space reflections, bokeh-like DOF, etc all looked absolutely fantastic. It might be all smoke and mirrors, as graphics rendering usually is, but the art and technical teams totally knocked it out of the park. Sound was like the rest of the series, more or less perfect. Great weapon and enemy sounds, moody Alien-esque music, rich ambience. The only sound bug I ran into (if it's a bug) was those explosive necros. Their audio mix (5.1 via Dolby Headphone) had their voice always sound as if it was coming from my behind, loudly, no matter where they were in the level. Every other enemy was fine.
Won't score it just yet, but those are my "I just finished" impressions.