Continuity mistake: The amount of bandages on Beast's torso vary depending on the shot. (00:14:35 - 00:19:45)
Continuity mistake: When Arkon states that Storm is the conqueror of his heart, he is holding up a goblet with his left hand and extending his right hand towards her. Not only is the bracelet on his right hand gold when it should be silver (the bracelet on his left hand remains silver in this shot), but his right hand looks rather effeminate. Arkon and Storm were sitting right next to each other and no one was shown to be standing between them in any other shot, so the right hand in question couldn't have belonged to another person. (00:16:40)
Continuity mistake: The banner with the picture of Storm and Arkon that the workers are hanging up appears to have a transparent background, but the underside is shown to be yellow. (00:07:00)
Continuity mistake: When Wolverine is talking about Storm being worshiped by a tribe when she was a child, the portion of his mask that runs down either side of his cheeks is yellow when it should be black. (00:06:45)