Revealing mistake: In one of the opening scenes the platoon of the captain is gunned down by a MG42. You can see the crimped fronts of the blanks in the belt.
Revealing mistake: When Johnny (Utah) and Samsara are in the ocean at night, the lighting appears to be in daytime. If you look at the surface when they come out of the little cave opening there is a bright sun-like shape.
Revealing mistake: In the shot where Laing hears the horse neigh, at the top right corner of the screen that there are trees on the other side of the wall, where only the blue sky was before. (00:19:15)
Revealing mistake: During the "fognado," when Fin is lifted off the ground, his shirt is pulled up due to the harness and its cables.
Revealing mistake: When Verdean is scrolling the Wikipedia page for the Israeli wrestler "Johnny Jerusalem", the page itself is a well thought out fake one (the wrestler in question is non-existent), but the prop person who made this fake did not bother going all the way through editing the wording of the footnotes ("References" paragraph), that display instead the name of the real wiki page they edited as foundation. The webpage is an edit of the real Wikipedia page of The French Angel, the real life pro-wrestler who was also rumored to be an inspiration for the look of cartoon orc Shrek. All the names and dates have been slightly altered ("Paul Blowzier in New York" instead of Paul Bowser in Boston, "Carl Pohiello" instead of Karl Pojello, etc). (00:37:20)
Revealing mistake: When the car goes off the road, there is CGI smoke which is visible above the tinted window, but is missing from through the window which isn't completely blacked out.