1. Acid blood that burns through metal barely makes a mark on the girls check
2. How could she hold the Aliens dead body without any acid blood causing you pain
3. It would take alot longer then that for the chestburster to come out
4. Considering how cold Antartica is its strange that the girl (Can't remember names) isn't bothered by it at the end considering how little she is wearing.
6. With all the Predators technology they couldn't find Acid proff shackels for the Alien Queen.
7. If the Predators have been visiting Earth for that long wouldn't there technology have improved greatly.