I don't know when the person above you played, but I didn't notice any of that (got it last week, binged it, 35ish hours). I didn't notice any missing graphics, and yes there are some spots where you can tell somethings coming, but it doesn't feel janky, it feels exciting. With game loop being all about upgrades, you can tell there's a few that aren't available, but there's so much meat their absence feels like part of the loop not part of the dev cycle.
The voice acting is all there, the mechanics are all there. I think I had like... One line of repeated dilouge? There's a good breadth of characters and they've got that same slow, well thought out progression they did in Hades I. With only one exception that I can't mention due to spoilers, you could tell me this a complete game with free DLC inbound.
Bug wise it's almost entirely free. I had some crashes but I think that was due to a bad HDMI cable repeatedly becoming unstable, and making the game freak out as to what screen it should be on. I haven't had an issue since I fixed the cable and it's the only bug I encountered.