Continuity mistake: Cocteau's tombstone has gained a gold plate on the front of it by the end of the episode. (00:01:35 - 00:19:25)
Continuity mistake: When Red Skull is leaving Wolverine and Captain America alone, he sets Captain America's shield on a table and Wolverine is shown to be hanging from stocks by his wrists with Captain America on his left and the table on his right at roughly a 45 degree angle. In a wide shot after Red Skull has left the room, the shield has vanished from the table and Wolverine is now several feet from where he originally was, with Captain America roughly at his 12 o'clock and the table roughly at his 3 o'clock. (00:10:45)
Continuity mistake: When Captain America says "Red Skull, wait!", his sleeves are entirely blue whereas they should be white from the mid-bicep and down. (00:10:45)
Continuity mistake: When Wolverine and Captain America first find Cocteau, the white ring on Captain America's shield is colored black in a wide shot. (00:08:45)
Continuity mistake: When Wolverine and Captain America start running, they are standing very close to each other. When the shot changes, they are several feet apart. (00:06:50)
Continuity mistake: When Wolverine is saying "You cheated me, old man!", the lower half of his trench coat briefly changes color. (00:01:40)