I enjoyed it, granted I have low expectations from these movies (I enjoyed Prometheus as well). But it left way more questions in my head than it answered.
-How did David get eggs
-The white alien seemed way more superior than the Xeno so how is Xeno superior?
-How the hell did David get the face huggers into that amber like stuff to shove in his mouth?
-Were there never any animals on the planet? Have they never come in contact with the black stuff? Would think there would be more monsters on the planet
-wtf even happened to shaw? Did she die and then he experimented or did she die because of him?
This bothered me a lot. He had not been on the ship, but knew exactly what kind of incubation state to put the face huggers into so they were compatible with the ship's. Would have made more sense had he smuggled a vial of his hybrid goo/spores on board.
I haven't really commented on the story, because I find that I can roll with whatever story so long as it's well told. I don't care for where this film is taking the series, but if Scott could tell it in a compelling way and with characters I cared about, I'd roll with it.
When the opening sequence showed 15 crew aboard, I was dismayed. That's too many to get to know them, leaving most to be fodder. Prometheus made that mistake as well. Alien had a cast of seven, and didn't kill anyone until the midpoint in the film, so we got to know them and their relationships. Aliens had the big cast (17 IIRC) but they were more strongly drawn characters, and it culled the group down to a manageable size quickly. Covenant whittled the pack down slowly, but half the time people died, they did so with my wondering, who was that exactly? Only 2-3 characters got enough screen time to really become characters.
Right off the bat, I had a hard time relating to what was happening in the story. The story needs the crew to wake up and intercept the transmission from the Engineer planet. The simple way to do that is to have the ship - or notDavid - intercept it, and wake them up. It would be an echo of Alien, which the film was doing throughout. But instead of this weird alien signal, we get the same scene as we got - it's human music. A perfectly fine play off expectations and of the first film.
Instead it over complicates things and there's this giant weird pulse that I don't understand, that knocks the solar sails down, which wreaks part of the ship? And so they have to do lots of repairs, and then McBride's character is the only one to pick up on the signal (not the ship for some reason I didn't understand) and THEN they decode the message. This wasted a lot of screen time, and they failed to use it to establish the characters. It was just confusing, wasted time. Just wake'em up to the signal. That would give the later part of the film more breathing room.
There's also a lot of dumb pseudo-science and problems boiled down to percentages. This ship is at 85% integrity. There's 85% tension on the chains holding the construction equipment (though with the chains sagging, I'm not sure how that works). Some how pulling a solar sail straight gets all the lights back on instantly. In Alien, an event we understand (the ship landed in such a way that the landing claw bent and was damaged, destabilizing the ship) causes damage we also understand (pipes rupture, "we're blind on B and C decks", etc.). Here they are have 85% integrity or something due to..something? An EV pulse or something? I'm really not sure.
Then we get a false conflict. The debate between the captain and Daniels is whether to make this new world where the colony sets down. It should have just been whether they take the detour to check it out and find the signal. No rational person would leap to debating whether they would settle down there, yet. The compromise should have been that they'd check out the planet, but not commit to any more unless it's perfect. Save that debate for later. The whole conflict is wasted screen time and the debate is not one reasonable people would have. From the get-go we're getting one manufactured crisis after another.
This kind of irrationality continues throughout the film. The captain has David at gun point, and a character he went looking for is found dead with an alien there. David defends the alien. At that point the captain should have gotten on the radio and gotten the rest of the crew together. Or told them that he found the missing crew member. Or that David is acting strangely. Or to just come meet them right there. Instead he tells no one, and follows David around, and obeys David's suggestion to stick his face in a giant, open-top alien egg.
I can't get behind a story like this, where every conflict and crisis is so plainly manufactured and out of step with what semi-rational people would do. I think the actual story they're telling is dumb, but it's an
interesting kind of dumb. It's just told very, very badly.