I have low standards for movies in general, but...

Even I noticed that 'Nathan' couldn't act at all. I mean, that was obvious from the very beginning - the only thing he could do was furrow his eyebrows and stand in a menacing, thoughtful way. I'm sorry, but that's not enough! He later tried to express some sort of grief for his parents, but I couldn't buy it - he should have been like "okay, whatever, I didn't like them anyway". At least that would have been a good portrayal of a sociopath. I would have liked the rest of the movie strictly as cheap entertainment, laughing at the other mistakes, but this was just the final nail in the coffin.