(at around 1h) When they are getting ready to activate Decapitron, Rick keeps mentioning the fuse box, when, in reality, it's a breaker box that they are using.
(at around 1h 12 mins) Towards the end of the movie when Decapitron blasts the demon for the first time, wires are visible yanking the demon away.
(at around 52 mins) In the previous film, Torch has never been seen or mentioned throughout the movie. In this film, Ricky knows his name and his existence without hesitation when he spots the puppet.