[SPOILERS]
The beginning was amazing. Absolutely loved the movie until the last 10-15 minutes. I was so excited to see a psychological horror from the child's point that he really was just sick and it was his imagination. The end just took a terrible and boring turn, totally changing the tone to a bad comedy. Suprise you're actually the child of Satan and now you suddenly go super Saiyan and kill everyone before driving to hell. Really killed the immersion and excitement I was feeling