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.
Archer (2009)
1 continuity mistake in season 2
Starring: Judy Greer, Jessica Walter, Chris Parnell, H. Jon Benjamin, Aisha Tyler, Amber Nash
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.
More quotes from Archer
Lo Scandalo - S3-E8
Question: How did Krieger manage to dispose of Savio's body and how did he even manage to get the entire bathroom cleaned up with so much blood in the room so quickly? With how much blood there was, it should have taken a long time to clean up.