These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Inferred Holocaust: Implied in the second movie, it was stated at the beginning that the bridge to the town was out, obviously done by Yorga to isolate the area so he create his own personal kingdom. Though he dies at the end of the film, all of the surviving characters are now undead and likely to spread vampirism to the neighboring orphanage and community.
What an Idiot: Both the protagonists and Yorga. The former for trying to take on Yorga at night in his own home no less crawling with traps and his undead harem. And the latter for the ways he killed. In the first movie he was trying to choke the remaining hero but said person was holding a stake out at the time and he ended up running right into it, killing himself. In the second movie, he was warned by his live in witch (no seriously) that if he tries to go after the girl he targeting, she will kill him. He ignores this of course and at the end that's exactly what happened.
Well okay, the film justifies the need for Hayes and Michael to go to Yorga's house at the climax as Donna was hypnotized into going there. But earlier, Paul, the first of the three, rashly goes there without no preparation or idea in hopes of rescuing Erica. Yorga more or less was expecting him too. And once inside, Yorga promptly kills him.