Critical response
Alien: Covenant received generally positive reviews from critics. The film has a 65% approval from 408 reviews compiled by review aggregation website Rotten Tomatoes, with an average rating of 6.3/10. The website's critical consensus reads, "Alien: Covenant delivers another satisfying round of close-quarters deep-space terror, even if it doesn't take the saga in any new directions." On Metacritic, the film has a score of 65 out of 100, based on reviews from 52 critics, indicating "generally favorable" reviews. Audiences polled by CinemaScore gave the film an average grade of "B" on an A+ to F scale, the same score earned by its predecessor.
Writing for The Guardian, Peter Bradshaw gave the film three stars out of five, stating that Alien: Covenant is "a greatest-hits compilation of the other Alien films' freaky moments. The paradox is that though you are intended to recognize these touches, you won't really be impressed unless you happen to be seeing them for the first time. For all this, the film is very capably made, with forceful, potent performances from Waterston and Fassbender." Geoffrey McNab, writing for The Independent, stated that it "certainly delivers what you'd expect from an Aliens film—spectacle, body horror, strong Ripley-like female protagonists and some astonishing special effects—but there's also a dispiriting sense that the film isn't at all sure of its own identity." He found the screenplay "very portentous" and concluded that "the crew members pitted against the monstrous creatures are trying their darndest to blast them to kingdom come, just as they would in any run-of-the-mill sci-fi B movie."
A. O. Scott of The New York Times said, "Alien: Covenant is an interesting movie ... for all its interplanetary ranging, [it] commits itself above all to the canny management of expectations." Trace Thurman, from Bloody Disgusting, gave the film a mediocre review, noting that although watching Alien: Covenant will make viewers appreciate Prometheus more, "this is a film that was made as a response to Prometheus critics but tries to appease fans of that film as well and it doesn't fully work." He also criticizes the overfamiliarity of the climax and insufficiently developed characters. Collider's review of the film stated that Scott "finds himself stuck between two constructs—the action-horror beats of an Alien film, and the weighty, ponderous themes of a Prometheus movie—and by indulging both, he never fully satisfies either. The result is a messy film that is at turns, exquisite and infuriating."
In a review for The Independent Clarisse Loughrey gave the film five stars describing it as "relentless and overwhelming, but all in the very best of ways" and as a "mightily impressive piece of cinematic engineering" which has brought together the Alien franchise. Loughrey praised Katherine Waterston for her "impressive work" as Daniels and went on to single out Fassbender for playing a "deeply frightening, scene-stealing antagonist". Sinead Brennan for RTÉ, gave the film 7/10, but gave high praise to Fassbender who she says "steals the show; seriously, he's incredible". Meanwhile, Neil Soans in a three star review for The Times of India, highlighted Danny McBride's performance as the most surprising given his comedic roots.
Matt Zoller Seitz of RogerEbert.com highly praised Alien: Covenant, giving it four out of four stars and stating that the film's structure, although repeatedly borrowing from other Alien films, serves a purpose not unlike the James Bond film series or Star Wars, "where part of the fun lies in seeing what variations the artists can bring while satisfying a rigid structure." He also emphasized that, like previous films of the series, real-world logic should not be applied to the film, and "[i]nstead you have to judge it by the standards of a fever dream or nightmare, a Freudian-Jungian narrative where the thing you fear most is what happens to you." Seitz later voted for it in Sight & Sound as one of the five best films of 2017.
In New York magazine, David Edelstein commented on David the android as representing a new generation of monster villains in the tradition of Frankenstein, stating, "In Star Trek, that man-machine nexus was...hopeful. Here, there's some doubt about David's ultimate motives, which puts Alien: Covenant squarely in the tradition of the Terminator and Matrix movies. And, of course, the novel Frankenstein, which carried the subtitle The Modern Prometheus. No less than Stephen Hawking—who survived with the aid of machines—has predicted that we have 100 years to live before evolved machines take human imperfection as justification for destroying humanity".
Kevin Lincoln, writing for Vulture, gave a strong endorsement of the depiction of David as an arch-villain in the film stating, "... one franchise is showing it's still possible for a modern blockbuster to have a great villain. In Alien: Covenant, David—the android played by Michael Fassbender, first introduced in Prometheus—comes into his own as a fleshed-out, dynamic, and genuinely striking antagonist, one who isn't just an equal match for the heroes, but even becomes the central thread of the series. He's a huge part of what makes Alien: Covenant work."
Writing for Vox, Alissa Wilkinson said that "Alien: Covenant is too muddled to pull off its deeply ambitious Satan allegories". She emphasized the Miltonic demonic aspect of the android David: "But David is a better Satan than Satan himself ... It's as if in the Alien universe, the devil has evolved, thanks to humans creating him. David, fatally, has the ability to create—something Satan never had—and he will use that power only to destroy. He doesn't have any real need to rebel against his maker, since from the moment he became sentient, he knew he'd already won. He is indestructible, and determined to make creatures that imitate his drive for total domination."