When Cooper first awakens from his cocoon, he has a wound on his cheek from where the bug bit him; however, when he is seen outside to help Sara, the wound is no longer there.
After tazering the bug, they get splattered with white goo, but in the next shot as they leave the room the amount of goo has changed drastically.
In one scene Cooper limps because of a wound, and the next he seems fully recovered.
When Hugo fires the pistol in the house for the first time, the topslide locks back showing that all of the rounds have been used up after the first 2 shots are heard. However, we continue to hear more shots fired without having been reloaded.
When Maureen has fired Cooper, she is shown wearing flats just before everybody gets unconscious. After she has been woken up by Cooper at the same place, she is shown wearing heels.
Looking through night goggles you can't see shadows as you see inside the nest with the rocks.