Continuity mistake: When the devil is falling apart and his 2nd ear falls off, he tells Nicky he cannot hear him, and asks the demon by his side who catches it to put it back on his head. But towards the end, when the devil is reduced to no more than a mouth and 2 arms, he is able to have a conversation with his demons about what's going on and hear them perfectly. (00:52:05 - 00:58:50)
Suggested correction: Its not clear that they are actually having a conversation, he is just a mouth and two arms that can only talk and hold itself up. They respond to him because he can hear but he doesn't even respond to them. Its not illogical that Satan was talking to himself while deaf and falling to bits.
Continuity mistake: When Nicky and Valerie get ice cream, Valerie orders a vanilla cone, while Nicky gets chocolate. However, when we see them later, around the time when they meet up with Adrian, you can see Nicky's cone at the bottom of the screen and he has vanilla instead of chocolate. (00:29:15)
Revealing mistake: When Nicky shoots goodness at a group of demons, one of them bites off a part of one of the rabbits. In the last shot of that demon, it is extremely obvious that the bunny that he is holding is a stuffed animal. (01:08:00)
Suggested correction: Gonna be honest - I genuinely think the fact the rabbit is replaced by a ludicrously OBVIOUS stuffed animal is kind of an intentional joke in itself. The rest of the effects in the film are very solid for the time, whereas it's laughably blatant that the rabbit is a stuffed toy. The fact that the movie lingers on several shots of it with its button-eyes, unrealistic "cartoon" dimensions, etc. kinda tells me you weren't meant to take it seriously. At best, it could maybe be reclassified as a "deliberate" mistake, but even then, I don't think I'd classify it as such.
