First up, I’ve got Erso. And… they’re fucked. MD!Erso in particular has no chance at making it out alive. They’re clever, sure, but they do not have the endurance to make it through the whole thing. I’d imagine at best they’d make it to around 600-700. Even if none of the monsters killed them, they’d eventually break down. They already need to do constant maintenance to keep themself running, and eventually, something’s gonna break that they can’t fix. And with nobody around to help, something’s gonna break that they can’t fix by themself, which means their death. They’d figure all of that out pretty quickly, and spend their time in the mansion trying to help future victims survive. In essence, they’re the one who’s gonna be writing the exposition notes about how the monsters work and how to avoid them.
Their sister, Eris, has much better chances. She’s quite practiced at surviving all sorts of things trying to kill her. Though, she’s not particularly concerned about escaping, either. If this were a prison, sure, she’d be out in no time. But it’s not a prison, it’s a gauntlet. It’s constructed so that you either escape, or you die. And since Eris insists on being contrary. Even when it’s a horrible idea, she’ll be trying to do some other third thing. She’ll survive a long time, and while doing that, she will be as much of a nuisance as possible, to everyone. Though honestly she might get along with Uzi. Eris’s primary motive is to fuck with people, she might appreciate someone else in the field. Either way, she’s a professional problem, and she takes that as seriously as she takes anything. She’ll break parts of the mansion, taunt the specimens, even try and mess with anyone else trying to make their way through the place if she gets the chance. And despite anyone’s best efforts, she won’t be going anywhere anytime soon.