When the team are outside the "Todorov" facility, the sign on the gate is clearly printed in Belarussian Cyrilic (good so far), except it reads "Todarau," employing an special Belarussian character as the the last "u" of the diphthong. Maybe a German would make a mistake in pronouncing that as "ov," but a SHIELD agent fluent in 6 languages? Granted it's a short vowel, so in some rendition it might be "av."
When Akela Amador pulls the man into the hotel room, holding the golf club, the door is left open after she pulls him in. Yet it's closed until the scene is finished and he goes to leave the room. Also, the painting on the wall behind the bed she throws him down on keeps changing positions; from straight, to slightly tilted, to really tilted, to straight again.
At 37:01- the stuntman bumps into the camera.
When Coulson signs a form hold by a police man in the Stockholm subway he is supposed to say "thank you" in Swedish. However, the vowel sound is slightly too long so the word comes closer to the Swedish word for roof.
When Coulson in is walking with Skye and May in the subway tunnel he states "Yesterday, 55 men, all military", but the closed caption reads "Yesterday, 25 men, all military". It happens again with Skylar sitting on the bench in the subway car, but the actresses lips look their saying 25 guys, which goes along with closed caption, but we're hearing 55 guys. Coulson's lips aren't visible when he speaks about how many men there were.
(at around 12 mins) When the S.H.I.E.L.D team are first seen in Belarus they are driving past a speed sign with a yellow background. Belarusian speed signs have white backgrounds. The sign has the Swedish design (colour and font), meaning that this scene was shot in Sweden just like the earlier parts of the episode that were actually set in Sweden.
The team's solution to unlinking Amador from her controller is to have Ward go out wearing glasses that spoof her eye feed. But he's a white male while she's a black female, and his hands are in full view of his glasses - for instance on the wheel while he's driving - and so will quickly reveal the deception.
The team decides to monitor Amador's eye broadcast in order to wait for her to look at something which identifies her location. This makes no sense. Her eye is broadcasting, from a single location. All they need to do is pinpoint the origin of the broadcast and follow it to where she is, in real time.