okay I'm thinking about this
not Saw specifically but a slasher with a legit body count. Summer camp slashers are overplayed but I think it really works because it's the type of thing the Scooby gang WOULD get caught up in.
like some of the counselors didn't show up (got got) so the head counselor calls his younger cousin to see if him and his friends can fill in last minute. They show up and they're a bunch of nerds, one of them even has an anxiety dog, and they don't have a big role at first. It seems like the movie is setting them up as cannon fodder.
and then the deaths start and suddenly the nerds are locked the fuck in. The little one with the glasses actually fixed the phone line and is taking stock of all their supplies in case the vehicles go out. The counselor's cousin who seemed like a himbo has set up a perimeter and made makeshift alarms for all the doors and windows, knows all the entry points. The anxious one and his dog are keeping the mood up with the snacks and activities that were supposed to be for the kids, making sure nobody panics and starts making dumb decisions. Somebody tried to grab the redhead and she flipped him over and had him zip-tied before anybody noticed. Weren't they a D&D group or something? What is happening???