Very well pulled off, and I'm hopefully optimistic it will do well enough to keep the funding coming for part two, which is needed to really validate part one.
The sound, architecture, and costumes were absolutely perfect to me. The sounds were unique and new...which made sudden moments of silence very powerful. It was a bit heavy on the desert religion chanting in the score by the end, when I almost had flashbacks to JarJar's screeching voice.
That 1970s abstract woodcut and slightly off color 'bookcover vibe' (which I mentally associate with JRR Tolkien as well) was somehow present in all the visual design; but not in a cheap retro way...And that was a very refreshing palette, distant from comicbook universes and "lazers in the darkness of space" ethos.
Technology without computers, and certainly not for technology's sake, was there in just the right amount that it doesn't feel immediately like a science fiction story. Maybe Gattaca was similar, but it's been a while. Orthornocopters were well done. The only exception to this observation (and I just think it's funny but doesn't take anything away) was the middle third which I started calling to myself "the era of spaceship lander doors".
It's possible a better (earlier) decision could been made about where to call it the final scene for part one. But I'm sure that was a very difficult choice, And would lead to this needing to be a three-parter.
This is worth seeing, and worth seeing on the IMAX screen.