Continuity mistake: When Wanderer and Melanie first start to work together to escape, she walks out onto the balcony above a pool and places her hands on the railing, very close to one of the vertical dividers of the railing. The camera pans down to the pool then cuts back up to her. Suddenly, she is equal distance from the vertical dividers on her left and right, and the doors and windows she just walked through have disappeared behind her.
Continuity mistake: When the Seeker's car hits the back of the stopped humans' truck under the bridge, the impact forces the human passenger to drop his gun; based on the angle, we expect it is tossed backwards about 10-20 feet - and lands beside the truck's right side. When the female Seeker arrives and approaches the truck, she picks up the gun from about 50 feet behind (and left of) the truck. The position of the crashed Seeker's car would have blocked the gun from going any further. Also; we see her pick up the gun from a very sharp sun/shade borderline - but in the wide shots, we can't even tell where the shade ends and the sun begins - no borderline at all. Also the closeup shows the gun on the right of the double-yellow line, but the wide shot shows it between the 2 yellow lines as she picks it up.