I mean there was talk of adding 'evil' variations to the routes at some point, so who knows? Bloodbath run perhaps? XD
I'd suggest trying to trigger the Pete events and possibly Thea's events as quickly as possible. If my theory is correct, then you shouldn't need anything else yo clear the current main story. Heck, it may be that you don't even need Thea's story. I do know that Pete is one of the key components though.