Check the personal tab on the right under consumables for the vigormax. Noted I need to make it more clear on how to use them once you get your first one.
Using the back feature / reloading for random events isn't something I've figured out a solution for. I might make it so you can only save it in the 'safe' player 'house' areas, and disable the back button entirely.
I'll look into Braxton's image being messed up, its possible that the image assets didn't get put into the itch version properly.
For the portraits, I've been experimenting with generating more of them, but figuring out how to manage to handle all the portraits requires more thought!
Thanks for the reports!