Todd McCarthy, THR:
"...roughly the first half of this massive and very well cast origins extravaganza is arguably the best hour of Marvel Comics-derived filmmaking among the torrent of it that's cascaded across screens in recent years. Audacious, confident and fueled by youthful energy, this is a surefire summer winner for a wide global audience."
Louise Keller, UrbanCinefile:
"Although the filmmakers have packed far too much into the storyline, there's first class action, superb special effects and a nice sprinkling of humour in a plot whose heart rests in the bond between Professor X and Magneto…Charismatic and enigmatic, Fassbender is superb as Erik, who is driven by hatred and an insatiable appetite for revenge…The politicizing of this prequel changes its nature considerably, taking it from its roots of fantasy action to a political thriller set at the time of the Cuban missile crisis but with Bond-style overtones. This is good for a debate all by itself."
"McAvoy and Fassbender are the undeniable center of X-Men: First Class,..Vaughn and his bevy of fellow screenwriters knit these characters so well into the real world that you don't need to know Beast from Banshee to understand their motivations. That's a rare, rare thing in comic book movies, particularly when elsewhere in the Marvel movie universe every film seems to be geared not toward its own characters, but toward a larger mythology that requires hours of research to understand. Though it is certainly the kickoff of a new franchise, and lugs around a story more sprawling than it needed to be, X-Men: First Class feels spry and self-contained, a blast of colorful and passionate enthusiasm with just enough weight to matter. It feels phenomenal to have these mutants back."
"Basically, [Vaughn] made a Bond film with good guys and bad guys alike who just happen to have super powers…Vaughn has been a little denuded here. He is great at filthy fun. But still, he shows that he has the chops. Look for the masterfully artful effects sequence early in the film and some of the great ways Vaughn has his characters manifest their powers. And while it makes you wonder how much better X-Men 3 could have been, it also makes you happy that he didn’t do an X-film until he had the opportunity to do it his way fully."
Brendon Connelly, BleedingCool:
"All in , First Class is a damn fine superhero movie. More geared, I would suggest, to the more mature fanboy as opposed to some of the aspartame-crazed comic book capers that tend to pop up on the boxes of Happy Meals."
[Images courtesy of Twentieth Century Fox]