Other mistake: After realising they can track the mother box, Batman says they have to go back to his base to use one of his satellites to track it, and they all do so. Which completely ignores the fact that Cyborg could easily access the satellite feed directly using his abilities and display it to the others on any nearby screen in Star Labs.
Suggested correction: Just because he had many options available to him, does not mean that the option which he chose was wrong.
Other mistake: Despite being a deadly marksman (only a few minutes earlier in the movie he stopped a bullet directed at him shooting it off the air), Bloodsport snipes several times at the huge kaiju featuring a massive eye in the central part of its body, and never once hits it. (01:51:45)
Other mistake: It doesn't look like a bomb exploded over Hero's left testicle - there should be obvious and major damage to the front of his pants (not just a small hole). (00:39:00 - 01:08:58)
Other mistake: When Cole gets in to drive, he puts it in gear to drive, then starts driving in reverse. (00:22:50)
Other mistake: While Snake Eyes is fighting at the beginning of the film, the other guy throws him to a block of concrete. Snake hits on his head and should be dead by then or at least seriously injured.
Other mistake: When Captain Jang is first introduced, she says "Out of my way, you fuckin' amateurs" in Korean, but the captions read [in English] instead of [in Korean]. (00:10:00)