Revealing mistake: While the ODIN agents are hallucinating, one can be seen looking into the barrel end of an MP40. If you follow him as the scene continues, the gun clips out of the sprite's visible area, and is almost entirely gone. (00:14:30)
Archer Vice: Southbound and Down - S5-E5
Factual error: When the bikers are chasing the bus, one of them crashes into the "Now Leaving Texarkana" sign. However, shortly before this, we see Cyril crashing into the sign reading "Austin. 105 miles." Texarkana is almost 350 miles from Austin.
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.