I have so many ideas, so i'll try to share some of them.

Let's start with Lorin. She seems like a shy and quiet girl, let's keep it that way and keep her gagged from start to finish, the idea of a girl not having a chance to say anything during her whole ordeal really turns me on. What to do with her? Chain her above ground to the wall, so she hangs at the wall in a spread eagle position, or you could even nail her to the wall. In that position, stick some needles into her body and give her some nipple clamps, heat up some of those needles for more pain. There's a metal bar horizontally stuck to the wall just under her pussy, so her pussy has to rest on it. You could stick some staples on that. Screw a metal dildo into the bar, with some spikes so she has some more fun, something for her ass too. Connect that with some wires for some electro torture, you could set it up so she gets shocked every minute, some wires for her tits too, that would work great with those nipple clamps. And then slowly heat it all up, so her pussy and guts get cooked! From there you could just leave her like that and wait how long she lasts, unless you have a better idea to finish her off.

Another girl i really like is Rica. Beat her to death! Just tie her up in an interesting position hanging from the ceiling, whip her for a while or do some other stuff to warm her up, rape her, and then use her as a punching bag. Under all those hits she gets more and more bruises, some of her teeth get knocked out and her eyes start swelling shut. Take breaks to rape her some more. Then turn to some brass knuckles for the beating so her injuries get even more serious. And then turn to a baseball bat, just take your time with her so she has to suffer many hits, before she dies stick the baseball bat into her cunt as deep as possible. Added bonus would be if the baseball bat is covered in barbed wire. No gags needed for that one, i'd like to see her scream and beg.

With no particular girl in mind, some other ideas:

Psychological torture. Either with two girls, letting one of them choose what's going to happen to the other, of course between two horrible options, then switch their roles - and make sure there is no communication between the girls and they don't know what options the other one had to choose from, so after a while they turn on each other and start choosing the more painful option. Or with just one girl, you could start something slow but lethal like tying her up over some hot coals, and she can always stop that for a while, but then she get's tortured in another way. And make her options worse every time, until you don't really give her a choice any more.

For a hanging scene that isn't just more of the same: To draw it out a little longer, instead of just hanging her, you could put a girl on the gallows, give her a good whipping and rape her while she already has a noose around her neck, then pull her up and let her hang for a while and just before she dies let her down again and rape and torture her some more, do it once or twice until the guys get bored of her and finally let her hang until she dies.

That's all for now.