Awesome update. I absolutely loved the idea of two different paths for Sarah. Take your time with the story and go at your own pace, you're doing something different than most other devs, so keep going. Don't rush the story; the buildup is amazing.
The only thing I would criticize about this update is that the main character looks a bit too shredded. It's not a big deal, and I wouldn't mind if you decide to keep him that way, but I personally think making him a bit less muscular would fit the type of character he's supposed to be better.
I hope you will continue focussing on Sarah's story, she is the best part of the game.