Factual error: After Archer disguises himself with Pinky Brewster's clown costume, he racks the shotgun, but no shell ejects. Okay, fine, the weapon was not loaded, now it is. When Archer, still disguised as Pinky Brewster approaches Pam and Cheryl, he racks the shotgun again. This time a shell should have been ejected, but it isn't.
Continuity mistake: In "A Going Concern", Archer has the microchip implant removed that Nikolai had put in in "Dial M for Mother." When they put it in, they drilled a hole on Archer's left side and put the microchip in there. But now, the band-aid shows they removed the microchip from Archer's right side.
Continuity mistake: After Archer has been beaten up by the Yakuza member, he is lying on the ground whilst the leader is mocking him. Lana is standing with her hands by her side, but in the next shot, she suddenly has one hand on her hip. Pam also suddenly moves closer to Cyril and Lana when the shot cuts.
Continuity mistake: On the way to the helicopter, Archer stops the group to ask about the lacrosse game. Archer has the pirate held at gun point and the two are standing mere inches from each other, but when Archer says to Lana she is his only friend, the pirate is nowhere in sight.
Other mistake: At the start of the scene where Mallory says she is going to the premiere with Burt Reynolds, there is an establishing shot of the building. Just over a minute later, the same shot is repeated a second time, as shown by the fact that the cars driving by the building and the cars parked in front of the building are exactly the same. (00:06:30 - 00:08:00)