Question: Normally, whenever Jason gets shot, struck with a machete or an axe, or stabbed with a knife, he shrugs it off. So why was he angry when Roy shot him with a paint gun?
Question: Why did Jason go into the children's cabin the first and second times? And why did he just draw close to Nancy when she saw him?
Answer: Yes, I don't believe he was trying to scare her; I think he was just looking at her out of genuine curiosity.
Answer: In all his attacks he's never killed children, it's like he's never seen them before. Plus, it's almost he trying to recall memories of what he's looking at. "Where have I seen these little people before."
The children might possibly remind Jason of his own days at the camp when he was a child, before he drowned.
Question: Who would have a tombstone made for Jason?
Answer: Someone who wanted to let people know that Jason was truly dead. That the crazed killer of Camp Crystal Lake would no longer be loose in the world.
Answer: Probably regulations so they wouldn't dig up that plot to bury someone else there.
Question: I know that Jason's father, Elias Voorhees, was supposed to appear in this movie. Why was this idea abandoned? For me it would have been interesting to see Jason's father. I just don't understand why was this idea scrapped.
Answer: Elias being removed from this movie was because the film studio didn't want to take on the responsibility of introducing Elias' background story for the next film.
Question: At the end of the last movie, "A New Beginning", Tommy was possessed by Jason (or perhaps he just went completely insane, who knows) and is about to kill Pam. Yet in this film he's (somewhat) normal and in control, and is going to cremate Jason's corpse. So, what happened in between?
Answer: Plotwise, we only see him stalk her with a knife. Most likely Tommy came back to his senses, or alternatively fought off the possession, and set the knife down. The realization of what he'd almost done prompted him to try to cremate Jason's remains, to rid himself of Jason's evil influence once and for all.
Answer: Tom McLoughlin decided to ignore Part 5 when he became director/writer of Part 6.
Chosen answer: He wasn't really angry, more like confused and annoyed at having paint shot at him.