Best two reviews:
1) Variety - Even when the blood-and-thunder hokiness of the over-the-top plot tilts perilously close to absurdity, the admirably straight-faced performances by well-cast lead players provide just enough counterbalance to sustain audience curiosity and sympathy. (Rating: 60) Read Full Review >
2) The Hollywood Reporter - The film has enough entertaining action and sly humor to please its target audience. (Rating: 60) Read Full Review >

Worst two reviews:
7) Los Angeles Times - Legion may traffic in signposts of the apocalypse, but the whole affair mostly indicates that we're in the movie wasteland that is January. (Rating: 30) Read Full Review >
8) Orlando Sentinel - Profane, profanely silly and blasphemous to beat the band, Legion begins well before plunging into the abyss of tedium. (Rating: 25) Read Full Review >