Continuity mistake: When everyone looks at Thena for biting the food off her fork with psycho stares at the guests, Kingo's hand goes on/off the mug several times. Particularly obvious when Gil obnoxiously says "I gave you the same thing, Sprite." (00:53:20)
Continuity mistake: Angelina Jolie's stance and the position of her hair change between shots when Sprite dissolves the illusion dome that brought her back to normal. (00:52:50)
Continuity mistake: When Phastos cures Thena's hysteric outburst by punching her lights out, he gets down on one knee to check on her. Which knee, that depends on the shot; right first, then left. (00:38:20)
Continuity mistake: When Thena faces Phastos in Tenochtitlan, their exchange of blows ends with her striking a cool pose with her sword upside down. Angelina Jolie's hands are in two different positions in the two shots, though. (00:38:00)
Audio problem: Ikaris says by mistake "I am very beautiful" in the local language. Sersi laughs and he asks what did he say. She says "You said..." but Gemma Chan's face is not moving. (00:29:10)
Continuity mistake: When Makkari peeks at the Babylonians having a scuffle, most people at the table are seated, but in the next shot it's a full fledged brawl with everyone at the tables participating. (00:26:35)
Continuity mistake: Gilgamesh opens the door and walks towards the oven outside. During the scene, the shadows by the oven change depending on the shot. (00:50:35)
Continuity mistake: During the interview that establishes that the protagonist is boring, behind Kingo you can see that there's a single seat at the back of the plane to the right of the door on the wall of posters. Kingo is talking to Sprite in front of the posters, and that chair is empty. She blurts out that Kingo abandoned her in Macedonia, and suddenly Kingo gets a reaction shot from Karun that was shooting from that seat. (00:48:30)