When the bad guys capture Ava and drag her onto the beach, she is barefoot. When Chance reaches her, she is wearing boots to protect her feet. After Chance leaves her, she is barefoot again.
When Ava shoots at Adam with the bow, the arrow hits the wall beside the open door. In the next shot, when Adam ducks and runs towards Ava, the arrow and hole are gone. .
When Adam yells at Dr. Steffanic, asking if he's all right, the voice that answers is clearly not Dr. Steffanic's.
At the firing range, the sound of the gunshots lag behind the bullet holes. Additionally, when Chance retrieves the target, it's completely undamaged.